Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract]
Work-in-process
Inventory, Work in Process, Gross
Range [Domain]
Statistical Measurement [Domain]
Gross Unrealized Loss
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Loss, before Tax
Schedule of Lease Cost
Lease, Cost [Table Text Block]
Supplies and other
Supplies and Other [Member]
Supplies and Other
Schedule of Estimated Fair Value of Short-Term Investments
Cash, Cash Equivalents and Investments [Table Text Block]
Cover [Abstract]
Cover [Abstract]
Thereafter
Lessee, Operating Lease, Liability, to be Paid, after Year Five
Net increase (decrease) in cash and cash equivalents
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect
Schedule of Future Minimum Payments Under Non-cancellable Operating Leases
Lessee, Operating Lease, Liability, to be Paid, Maturity [Table Text Block]
Other current liabilities
Other Liabilities, Current
Trading Symbol
Trading Symbol
Organization And Basis Of Presentation [Line Items]
Organization And Basis Of Presentation [Line Items]
Organization and basis of presentation.
All Trading Arrangements
All Trading Arrangements [Member]
Compensation Actually Paid vs. Net Income
Compensation Actually Paid vs. Net Income [Text Block]
Non-NEOs
Non-NEOs [Member]
AMF Medical Acquisition
AMF Medical Acquisition [Member]
AMF Medical Acquisition [Member]
Rule 10b5-1 Arrangement Adopted
Rule 10b5-1 Arrangement Adopted [Flag]
Awards Close in Time to MNPI Disclosures
Awards Close in Time to MNPI Disclosures [Table]
Debt instrument, convertible, conversion ratio
Debt Instrument, Convertible, Conversion Ratio
Equity method investments
Equity Method Investments
Pay vs Performance Disclosure [Line Items]
Peer Group Total Shareholder Return Amount
Peer Group Total Shareholder Return Amount
Cash equivalents
Cash Equivalents [Member]
Purchase of capped call options related to convertible notes due 2029
Adjustments To Additional Paid In Capital, Equity Component Of Convertible Debt, Purchase Of Capped Call Option
Adjustments To Additional Paid In Capital, Equity Component Of Convertible Debt, Purchase Of Capped Call Option
Accounts receivable, net
Increase (Decrease) in Accounts Receivable
Proceeds from capped call termination
Proceeds From Capped Call Termination
Proceeds From Capped Call Termination
Net Loss Per Share
Earnings Per Share, Policy [Policy Text Block]
Organization and Basis of Presentation
Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block]
Operating leases and other current liabilities
Increase (Decrease) in Operating Lease Liability
Non-Rule 10b5-1 Arrangement Adopted
Non-Rule 10b5-1 Arrangement Adopted [Flag]
Vesting of restricted stock units, net of shares withheld for taxes (in shares)
Stock Issued During Period, Shares, Restricted Stock Award, Net of Forfeitures
Fair Value Measurements
Fair Value Disclosures [Text Block]
Award Timing Disclosures [Line Items]
Convertible Senior Notes due 2025
Convertible Senior Notes Due 2025
Convertible Senior Notes Due 2025 [Member]
Convertible Senior Notes Due 2025
Schedule of Reconciliation of Changes in the Allowance for Estimated Accounts Receivable Credit Losses
Financing Receivable, Allowance for Credit Loss [Table Text Block]
Other Performance Measure, Amount
Other Performance Measure, Amount
Schedule of Restricted Stock Units
Schedule of Nonvested Restricted Stock Units Activity [Table Text Block]
Leases
Lessee, Operating Leases [Text Block]
Common stock, shares outstanding (in shares)
Common Stock, Shares, Outstanding
Operating lease cost (excluding sublease income)
Operating Lease, Cost
Composition of Certain Financial Statement Items
Condensed Financial Statements [Text Block]
Class of Warrant or Right [Axis]
Class of Warrant or Right [Axis]
Operating lease liabilities - long-term
Operating Lease, Liability, Noncurrent
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Segment Reporting
Segment Reporting, Policy [Policy Text Block]
Deferred revenue
Contract with Customer, Liability, Current
United States
UNITED STATES
Other long-term assets
Other Assets, Noncurrent
Entity Tax Identification Number
Entity Tax Identification Number
Leases [Abstract]
Leases [Abstract]
Price of acquisition, expected
Asset Acquisition, Price of Acquisition, Expected
Antidilutive Securities, Name [Domain]
Antidilutive Securities, Name [Domain]
Accretion (amortization) of discount or premium on short-term investments
Investment Income, Net, Amortization of Discount and Premium
Selling, general and administrative
Selling, General and Administrative Expenses [Member]
Proceeds from issuance of convertible senior notes due 2029, net of $9,400 debt issuance costs
Proceeds from Convertible Debt
Net cash used in operating activities
Net Cash Provided by (Used in) Operating Activities
Operating Activities
Net Cash Provided by (Used in) Operating Activities [Abstract]
Pump
Pump [Member]
Pump
United States Treasury securities
US Treasury Securities [Member]
Payment for capped call transactions related to convertible senior notes due 2029
Payments For Capped Call Transactions
Payments For Capped Call Transactions
Equity Components [Axis]
Equity Components [Axis]
Award Timing Method
Award Timing Method [Text Block]
Trading Arrangements, by Individual
Trading Arrangements, by Individual [Table]
Estimated Fair Value
Debt securities, available for sale
Debt Securities, Available-for-Sale
Measurement Frequency [Axis]
Measurement Frequency [Axis]
Entity Common Stock, Shares Outstanding (in shares)
Entity Common Stock, Shares Outstanding
Insider Trading Policies and Procedures [Line Items]
Total stock-based compensation expense capitalized as part of cost of inventory
Share-Based Payment Arrangement, Amount Capitalized
Use of Estimates
Use of Estimates, Policy [Policy Text Block]
Adjustment to Compensation, Amount
Adjustment to Compensation Amount
Additional paid-in capital
Additional Paid in Capital, Common Stock
Compensation Amount
Outstanding Recovery Compensation Amount
Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table
Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member]
Unrealized gain (loss) on short-term investments
Unrealized gain on short-term investments
Other Comprehensive Income (Loss), Available-for-Sale Securities Adjustment, Net of Tax, Portion Attributable to Parent
Entity Small Business
Entity Small Business
Company Selected Measure Amount
Company Selected Measure Amount
Geographical
Geographical [Axis]
Operating lease and other impairment charges
Operating Lease, Impairment And Termination Loss
Operating Lease, Impairment And Termination Loss
Tabular List, Table
Tabular List [Table Text Block]
2029
Lessee, Operating Lease, Liability, to be Paid, Year Five
Level 3
Fair Value, Inputs, Level 3 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Fair Value Measurement Inputs and Valuation Techniques [Table]
Fair Value Measurement Inputs and Valuation Techniques [Table]
Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table
Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member]
Lessee, Lease, Description [Line Items]
Lessee, Lease, Description [Line Items]
Accrued expenses
Accrued Liabilities, Current
Antidilutive securities excluded from computation of earnings per share, amount (in shares)
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount
Employee Benefits
Compensation and Employee Benefit Plans [Text Block]
Impairment of Long-Lived Assets
Impairment or Disposal of Long-Lived Assets, Policy [Policy Text Block]
Asset Acquisition [Axis]
Asset Acquisition [Axis]
Cash and cash equivalents at beginning of period
Cash and cash equivalents at end of period
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents
Net proceeds to pay for capped call transactions
Payments For Capped Calls
Payments For Capped Calls
Current assets:
Assets, Current [Abstract]
Less: allowance for credit losses
Balance at beginning of the period
Balance at end of the period
Accounts Receivable, Allowance for Credit Loss
Fair Value of Financial Instruments
Fair Value of Financial Instruments, Policy [Policy Text Block]
Cash used to settle withholding taxes on vested restricted stock, net of proceeds from issuance of common stock under Company stock plans
Payment, Tax Withholding, Share-Based Payment Arrangement
Other comprehensive income (loss):
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Settlements made during the period
Standard and Extended Product Warranty Accrual, Decrease for Payments
Forgone Recovery due to Disqualification of Tax Benefits, Amount
Forgone Recovery due to Disqualification of Tax Benefits, Amount
Product and Service
Product and Service [Domain]
Short-term lease cost
Short-Term Lease, Cost
Options to purchase common stock
Share-based Payment Arrangement, Option
Share-Based Payment Arrangement, Option [Member]
Fair Value Disclosures [Abstract]
Fair Value Disclosures [Abstract]
2025
Lessee, Operating Lease, Liability, to be Paid, Year One
Other financing activities
Proceeds from (Payments for) Other Financing Activities
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table]
Antidilutive Security, Excluded EPS Calculation [Table]
Comprehensive loss
Comprehensive Income (Loss), Net of Tax, Attributable to Parent
Lease Agreements
Lease Agreements [Member]
Warrants to purchase common stock
Shares underlying outstanding warrants
Warrant [Member]
Security Exchange Name
Security Exchange Name
Schedule of Contractual Maturities of Available -For-Sale Debt Securities
Investments Classified by Contractual Maturity Date [Table Text Block]
Award Type [Axis]
Award Type [Axis]
Operating lease, liability to be paid 2025 through 2028
Lessee, Operating Lease, Liability, To Be Paid, Years One Through Four
Lessee, Operating Lease, Liability, To Be Paid, Years One Through Four
Corporate debt securities
Corporate debt securities
Corporate Debt Securities [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Lease Contractual Term [Domain]
Lease Contractual Term [Domain]
Property and equipment, net
Property, Plant and Equipment, Net
Total liabilities
Liabilities
Convertible Senior Notes
Convertible Debt [Member]
Common stock, par value (in dollars per share)
Common Stock, Par or Stated Value Per Share
Forgone Recovery, Explanation of Impracticability
Forgone Recovery, Explanation of Impracticability [Text Block]
Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table]
Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table]
Expiration Date
Trading Arrangement Expiration Date
Investing Activities
Net Cash Provided by (Used in) Investing Activities [Abstract]
Number of shares issued by each warrant (in shares)
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right
Operating lease liabilities
Less: current portion of operating lease liabilities
Operating Lease, Liability, Current
Total Shareholder Return Amount
Total Shareholder Return Amount
Common stock, shares issued (in shares)
Common Stock, Shares, Issued
Debt instrument, convertible, threshold trading days consecutive trading days
Debt Instrument, Convertible, Threshold Consecutive Trading Days
Equity Awards Adjustments, Footnote
Equity Awards Adjustments, Footnote [Text Block]
Customers accounted for 10% or more
Concentration Risk, Percentage
Expected life span term
Product Life Span Term
Product life span term.
Insider Trading Policies and Procedures Adopted
Insider Trading Policies and Procedures Adopted [Flag]
Stock-Based Compensation
Compensation Related Costs, Policy [Policy Text Block]
Accounts receivable, net
Accounts Receivable, after Allowance for Credit Loss
Exercise of stock options (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Exercises in Period
Debt Instrument [Line Items]
Debt Instrument [Line Items]
Named Executive Officers, Footnote
Named Executive Officers, Footnote [Text Block]
Research and development
Research and Development Expense [Member]
Slim cartridges and infusion sets
Slim Cartridges And Infusion Sets [Member]
Slim cartridges and infusion sets.
Common stock, shares authorized (in shares)
Common Stock, Shares Authorized
Basis of Presentation and Principles of Consolidation
Basis of Accounting, Policy [Policy Text Block]
Weighted average shares used to compute diluted net loss per share (in shares)
Weighted Average Number of Shares Outstanding, Diluted
Operating lease, number of options to extend
Lessee, Operating Lease, Number Of Extensions
Lessee, Operating Lease, Number Of Extensions
MNPI Disclosure Timed for Compensation Value
MNPI Disclosure Timed for Compensation Value [Flag]
Long-term Debt, Type [Axis]
Long-Term Debt, Type [Axis]
Total stockholders’ equity
Beginning balance
Ending Balance
Equity, Attributable to Parent
Net proceeds from issuance of convertible notes
Proceeds from Issuance of Debt
Within One Year
Debt Securities, Available-for-Sale, Fair Value, Maturity, Allocated and Single Maturity Date, Year One
Operating lease extension period
Lessee, Operating Lease, Renewal Term
Interest expense
Interest Expense, Nonoperating
Concentration Risk Type
Concentration Risk Type [Domain]
Unsecured letter of credit outstanding
Letters of Credit Outstanding, Amount
Selling, general and administrative
Selling, General and Administrative Expense
Write-offs and adjustments, net of recoveries
Accounts Receivable, Allowance for Credit Loss, Writeoff
Repurchase of $246,740 principal amount of convertible senior notes due 2025
Repayments of Convertible Debt
Fair Value, Measurements, Recurring
Fair Value, Recurring [Member]
Accounts receivable, net
Accounts Receivable, after Allowance for Credit Loss, Current
Conversion price (in dollars per share)
Debt Instrument, Convertible, Conversion Price
Cost of sales
Cost of Sales [Member]
Warranty period offered
Products Warranty Period
Products warranty period.
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Operating lease impairment charge
Asset Impairment Charges
Total debt, net
Long-Term Debt
Summary Of Significant Accounting Policies [Table]
Summary Of Significant Accounting Policies [Table]
Summary of significant accounting policies.
Pension Adjustments Prior Service Cost
Pension Adjustments Prior Service Cost [Member]
Document Fiscal Period Focus
Document Fiscal Period Focus
All Executive Categories
All Executive Categories [Member]
Convertible senior notes (if-converted)
Shares reserved for issuance upon conversion of Convertible Senior Notes
Convertible Debt Securities [Member]
Changed Peer Group, Footnote
Changed Peer Group, Footnote [Text Block]
The Company
Nature Of Operation [Policy Text Block]
Nature of operation.
Assets
Assets [Abstract]
Fair Value, by Balance Sheet Grouping [Table]
Fair Value, by Balance Sheet Grouping [Table]
Document Type
Document Type
Effective interest rate
Debt Instrument, Interest Rate, Effective Percentage
Unwind of capped call options related to convertible notes due 2025
Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt, Partial Termination of Capped Call Options
Adjustments to Additional Paid in Capital, Equity Component of Convertible Debt, Partial Termination of Capped Call Options
Commercial paper
Commercial Paper [Member]
Pension Benefits Adjustments, Footnote
Pension Benefits Adjustments, Footnote [Text Block]
Total Shareholder Return Vs Peer Group
Total Shareholder Return Vs Peer Group [Text Block]
Average cost per share (in dollars per share)
Shares Acquired, Average Cost Per Share
Contractual interest expense
Interest Expense, Debt, Excluding Amortization
Acquisition of in-process research and development
Payments to Acquire in Process Research and Development
Amortized Cost
Debt Securities, Available-for-Sale, Amortized Cost
Maximum
Maximum [Member]
Deferred revenue
Contract with Customer, Liability
Equity Valuation Assumption Difference, Footnote
Equity Valuation Assumption Difference, Footnote [Text Block]
Outside the United States
Non-US [Member]
Antidilutive Securities [Axis]
Antidilutive Securities [Axis]
Accounts payable
Accounts Payable, Current
Accounting Policies [Abstract]
Accounting Policies [Abstract]
Number of geographical markets
Number Of Geographical Markets
Number Of Geographical Markets
Increases (decreases) in warranty estimates
Standard and Extended Product Warranty Accrual, Increase (Decrease) for Preexisting Warranties
Current Fiscal Year End Date
Current Fiscal Year End Date
Less: amount representing interest
Lessee, Operating Lease, Liability, Undiscounted Excess Amount
Total lease cost
Lease, Cost
Short-term investments
Short-Term Investments
Range [Axis]
Statistical Measurement [Axis]
PEO Name
PEO Name
Warrants outstanding (in shares)
Class of Warrant or Right, Outstanding
Non-Rule 10b5-1 Arrangement Terminated
Non-Rule 10b5-1 Arrangement Terminated [Flag]
Cash Cash Equivalents And Short Term Investments [Table]
Cash Cash Equivalents And Short Term Investments [Table]
Cash cash equivalents and short term investments.
Non-PEO NEO Average Total Compensation Amount
Non-PEO NEO Average Total Compensation Amount
Award Type [Domain]
Award Type [Domain]
Shares underlying outstanding stock options
Stock Options Issued And Outstanding [Member]
Stock options issued and outstanding.
Name
Outstanding Recovery, Individual Name
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue [Line Items]
Schedule of Anti-Dilutive Securities
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
Compensation Actually Paid vs. Company Selected Measure
Compensation Actually Paid vs. Company Selected Measure [Text Block]
Non-PEO NEO
Non-PEO NEO [Member]
Additional Paid-in Capital
Additional Paid-in Capital [Member]
Schedule of Accounts Receivable
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
Award Timing Predetermined
Award Timing Predetermined [Flag]
Redemption price percentage
Debt Instrument, Redemption Price, Percentage
Recently Issued Accounting Pronouncements and Accounting Pronouncements Issued and Not Yet Adopted
New Accounting Pronouncements, Policy [Policy Text Block]
Forecast
Forecast [Member]
Warranty Reserve
Standard Product Warranty, Policy [Policy Text Block]
Net loss per share - diluted (in dollars per share)
Earnings Per Share, Diluted
Finite-Lived Intangible Assets by Major Class [Axis]
Finite-Lived Intangible Assets by Major Class [Axis]
Equity Method Investments
Revenue from Contract with Customer [Policy Text Block]
Name
Measure Name
Entity Interactive Data Current
Entity Interactive Data Current
Deferred revenue
Increase (Decrease) in Contract with Customer, Liability
Restatement does not require Recovery
Restatement Does Not Require Recovery [Text Block]
Schedule of Stockholders' Equity Common Stock Warrants
Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block]
Number of operating segments
Number of Operating Segments
Retirement Benefits [Abstract]
Income taxes paid
Income Taxes Paid
Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
Disaggregation of Revenue [Table]
Disaggregation of Revenue [Table]
Statement of Financial Position [Abstract]
Statement of Financial Position [Abstract]
Other current liabilities
Product Warranty Accrual, Current
Stock-based compensation expense
Share-Based Payment Arrangement, Noncash Expense
Net loss
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest
Income tax expense
Income Tax Expense (Benefit)
Interest rate
Debt Instrument, Interest Rate, Stated Percentage
Conversion Instance, 130%
Conversion Instance, 130% [Member]
Conversion Instance, 130% [Member]
Organization And Basis Of Presentation [Table]
Organization And Basis Of Presentation [Table]
Organization and basis of presentation.
Allowance for doubtful accounts
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Supplemental disclosures of cash flow information
Supplemental Cash Flow Information [Abstract]
Sales
Total Sales
Revenue from Contract with Customer, Excluding Assessed Tax
Other long-term liabilities
Increase (Decrease) in Other Noncurrent Liabilities
Concentration Risk Benchmark
Concentration Risk Benchmark [Domain]
Net cash provided by (used in) investing activities
Net Cash Provided by (Used in) Investing Activities
Operating loss
Operating Income (Loss)
Business Acquisition [Line Items]
Business Acquisition [Line Items]
Research and development
Research and Development Expense (Excluding Acquired in Process Cost)
Vista Sorrento Lease
Vista Sorrento Lease [Member]
Vista Sorrento Lease
Total liabilities and stockholders’ equity
Liabilities and Equity
Other
Other Operating Activities, Cash Flow Statement
Rule 10b5-1 Arrangement Terminated
Rule 10b5-1 Arrangement Terminated [Flag]
All Adjustments to Compensation
All Adjustments to Compensation [Member]
Fair Value Hierarchy and NAV [Axis]
Fair Value Hierarchy and NAV [Axis]
Employee-related liabilities
Employee-related Liabilities, Current
Prepaid and other current assets
Increase (Decrease) in Prepaid Expense and Other Assets
Operating lease, impairment loss
Operating Lease, Impairment Loss
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies Disclosure [Abstract]
Finite-Lived Intangible Assets, Major Class Name [Domain]
Finite-Lived Intangible Assets, Major Class Name [Domain]
Operating lease right-of-use assets obtained in exchange for operating lease obligations
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability
Underlying Security Market Price Change
Underlying Security Market Price Change, Percent
Debt Conversion, Name [Domain]
Debt Conversion, Name [Domain]
Scenario [Domain]
Scenario [Domain]
Individual:
Individual [Axis]
Vesting of restricted stock units, net of shares withheld for taxes
Stock Issued During Period, Value, Restricted Stock Award, Net of Forfeitures
Headquarters Lease
Headquarters Lease [Member]
Headquarters Lease
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent [Member]
Inventories
Total inventories
Inventory, Net
United States Government-sponsored enterprises
US Government Agencies Debt Securities [Member]
Long-term Debt, Type [Domain]
Long-Term Debt, Type [Domain]
Product and Service [Axis]
Product and Service [Axis]
Entity Address, State or Province
Entity Address, State or Province
Statement [Line Items]
Statement [Line Items]
Erroneous Compensation Analysis
Erroneous Compensation Analysis [Text Block]
Operating expenses:
Operating Expenses [Abstract]
Compensation Actually Paid vs. Total Shareholder Return
Compensation Actually Paid vs. Total Shareholder Return [Text Block]
Financial Instruments [Domain]
Financial Instruments [Domain]
Sublease income, gross
Sublease Income
Liabilities and Stockholders’ Equity
Liabilities and Equity [Abstract]
Minimum
Minimum [Member]
Restatement Determination Date
Restatement Determination Date
Adoption Date
Trading Arrangement Adoption Date
Pay vs Performance Disclosure
Pay vs Performance Disclosure [Table]
Deferred revenue - long-term
Contract with Customer, Liability, Noncurrent
Capillary Biomedical
Capillary Biomedical [Member]
Capillary Biomedical [Member]
Operating lease right-of-use assets
Operating Lease, Right-of-Use Asset
Erroneously Awarded Compensation Recovery
Erroneously Awarded Compensation Recovery [Table]
Provision for expected credit losses
Provision for expected credit losses
Accounts Receivable, Credit Loss Expense (Reversal)
Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year
Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member]
Exercise Price
Award Exercise Price
Lease Contractual Term [Axis]
Lease Contractual Term [Axis]
Debt Conversion Description [Axis]
Debt Conversion Description [Axis]
Employee-related liabilities
Increase (Decrease) in Employee Related Liabilities
Arrangement Duration
Trading Arrangement Duration
Exercise of stock options
Stock Issued During Period, Value, Stock Options Exercised
Schedule of Convertible Senior Notes
Convertible Debt [Table Text Block]
Stockholders’ equity:
Equity, Attributable to Parent [Abstract]
Weighted average grant date fair value (in dollars per share)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value
Peer Group Issuers, Footnote
Peer Group Issuers, Footnote [Text Block]
Interest income and other, net
Interest and Other Income
Material Terms of Trading Arrangement
Material Terms of Trading Arrangement [Text Block]
All Individuals
All Individuals [Member]
PEO
PEO [Member]
Income Tax Disclosure [Abstract]
Income Tax Disclosure [Abstract]
Name
Trading Arrangement, Individual Name
Total other income (expense), net
Other Nonoperating Income (Expense)
Statement of Stockholders' Equity [Abstract]
Statement of Stockholders' Equity [Abstract]
Minimum age of employees for defined contribution plan
Defined Contribution Plan Minimum Age Of Employee
Defined contribution plan minimum age of employee.
Gross Unrealized Gain
Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax
Other long-term assets
Increase (Decrease) in Other Noncurrent Assets
Loss from equity method investments
Loss from equity method investments
Income (Loss) from Equity Method Investments
Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract]
Awards Close in Time to MNPI Disclosures, Table
Awards Close in Time to MNPI Disclosures [Table Text Block]
Other income (expense), net:
Other Nonoperating Income (Expense) [Abstract]
Common stock reserved for future issuance (in shares)
Common Stock, Capital Shares Reserved for Future Issuance
Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year
Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member]
Beginning balance (in shares)
Ending balance (in shares)
Shares, Outstanding
Cash equivalents
Cash and Cash Equivalents, Fair Value Disclosure
Aggregate Erroneous Compensation Amount
Aggregate Erroneous Compensation Amount
Remaining short-term accrued liability
Asset Acquisition, Contingent Consideration, Liability, Current
Local Phone Number
Local Phone Number
Aggregate Erroneous Compensation Not Yet Determined
Aggregate Erroneous Compensation Not Yet Determined [Text Block]
Total operating expenses
Operating Expenses
Changes in operating assets and liabilities:
Increase (Decrease) in Operating Capital [Abstract]
PEO Total Compensation Amount
PEO Total Compensation Amount
Income Statement Location [Axis]
Statement of Income Location, Balance [Axis]
Commitments and Contingencies
Commitments and Contingencies Disclosure [Text Block]
Debt Disclosure [Abstract]
Debt Disclosure [Abstract]
Common Stock
Common Stock [Member]
Measure:
Measure [Axis]
Forgone Recovery due to Expense of Enforcement, Amount
Forgone Recovery due to Expense of Enforcement, Amount
Schedule of Business Acquisitions, by Acquisition [Table]
Schedule of Business Acquisitions, by Acquisition [Table]
Revenue, Major Customer [Line Items]
Revenue, Major Customer [Line Items]
Convertible Senior Notes Due 2029
Convertible Senior Notes due 2029
Convertible Senior Notes Due 2029 [Member]
Convertible Senior Notes Due 2029
Entity Emerging Growth Company
Entity Emerging Growth Company
Segment Reporting [Abstract]
Intangible Assets Subject to Amortization
Goodwill and Intangible Assets, Intangible Assets, Policy [Policy Text Block]
Entity Central Index Key
Entity Central Index Key
Scenario [Axis]
Scenario [Axis]
Cash equivalents maturity term
Cash Equivalents Maturity Term
Cash equivalents maturity term.
Schedule of Inventories
Schedule of Inventory, Current [Table Text Block]
Lessee, Lease, Description [Table]
Lessee, Lease, Description [Table]
Non-GAAP Measure Description
Non-GAAP Measure Description [Text Block]
Headquarters Lease Phase II
Headquarters Lease Phase II [Member]
Headquarters Lease Phase II
Non-PEO NEO Average Compensation Actually Paid Amount
Non-PEO NEO Average Compensation Actually Paid Amount
Provision for warranties issued during the period
Standard and Extended Product Warranty Accrual, Increase for Warranties Issued
Conversion Instance, 98%
Conversion Instance, 98% [Member]
Conversion Instance, 98% [Member]
Stockholders' Equity
Equity [Text Block]
Award Timing, How MNPI Considered
Award Timing, How MNPI Considered [Text Block]
Equity Component [Domain]
Equity Component [Domain]
Financial Instrument [Axis]
Financial Instrument [Axis]
Less: current portion
Long-Term Debt, Current Maturities
Business Segment and Geographic Information
Segment Reporting Disclosure [Text Block]
Other long-term liabilities
Product Warranty Accrual, Noncurrent
Additional 402(v) Disclosure
Additional 402(v) Disclosure [Text Block]
Stock-based compensation expense
APIC, Share-Based Payment Arrangement, Increase for Cost Recognition
Entity Shell Company
Entity Shell Company
Entity Incorporation, State or Country Code
Entity Incorporation, State or Country Code
Title
Trading Arrangement, Individual Title
Repurchased face amount
Debt Instrument, Repurchased Face Amount
Statement [Table]
Statement [Table]
Interest expense
Total interest expense
Interest Expense, Debt
Fair Value, Measurement Frequency [Domain]
Measurement Frequency [Domain]
Summary of Significant Accounting Policies
Significant Accounting Policies [Text Block]
City Area Code
City Area Code
Current liabilities:
Liabilities, Current [Abstract]
Insider Trading Policies and Procedures Not Adopted
Insider Trading Policies and Procedures Not Adopted [Text Block]
Purchases of short-term investments
Payments to Acquire Short-Term Investments
Concentration Risk Benchmark
Concentration Risk Benchmark [Axis]
Level 1
Fair Value, Inputs, Level 1 [Member]
Total current assets
Assets, Current
Accounts receivable
Accounts Receivable, before Allowance for Credit Loss
Schedule of Interest Expense Recognized
Interest Income and Interest Expense Disclosure [Table Text Block]
Statement of Cash Flows [Abstract]
Statement of Cash Flows [Abstract]
Capped call transactions net cost
Debt Instrument, Capped Call, Net Cost
Debt Instrument, Capped Call, Net Cost
Principal amount
Debt Conversion, Converted Instrument, Amount
Supplemental schedule of non-cash investing and financing activities
Noncash Investing and Financing Items [Abstract]
Headquarters Lease Phase I
Headquarters Lease Phase I [Member]
Headquarters Lease Phase I
Common Stock Warrant Expiring March 2027
Common Stock Warrant Expiring March 2027 [Member]
Common Stock Warrant Expiring March 2027 [Member]
Repurchase and retirement of common stock
Repurchase and retirement of common stock
Payments for Repurchase of Common Stock
Summary Of Significant Accounting Policies [Line Items]
Summary Of Significant Accounting Policies [Line Items]
Summary of significant accounting policies.
Schedule of Long-term Debt Instruments [Table]
Schedule of Long-Term Debt Instruments [Table]
Long-term senior convertible notes
Long-Term Debt, Excluding Current Maturities
Accounts Receivable
Receivable [Policy Text Block]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]
Shares authorized for future equity award grants
Authorized For Future Option Grants [Member]
Authorized for future option grants.
Equity securities without readily determinable fair value, amount
Equity Securities without Readily Determinable Fair Value, Amount
Income Taxes
Income Tax Disclosure [Text Block]
Stock repurchase and retirement of shares
Stock Repurchased and Retired During Period, Value
2028
Lessee, Operating Lease, Liability, to be Paid, Year Four
Equity [Abstract]
Equity [Abstract]
Accumulated deficit
Retained Earnings (Accumulated Deficit)
Stock repurchase and retirement of shares (in shares)
Stock Repurchased and Retired During Period, Shares
Revenue from Contract with Customer Benchmark
Revenue from Contract with Customer Benchmark [Member]
Inventories
Increase (Decrease) in Inventories
Foreign government bonds
Debt Security, Government, Non-US [Member]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Aggregate Available
Trading Arrangement, Securities Aggregate Available Amount
Equity Awards Adjustments
Equity Awards Adjustments [Member]
Weighted-average discount rate used to determine operating lease liabilities
Operating Lease, Weighted Average Discount Rate, Percent
Present value of operating lease liabilities
Operating Lease, Liability
Net cash provided by (used in) financing activities
Net Cash Provided by (Used in) Financing Activities
Underlying Securities
Award Underlying Securities Amount
Short-Term Investments
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block]
Net revenue deferred for Tandem Choice program
Tandem Choice Program, Recognized (Deferred) [Member]
Tandem Choice Program, Recognized (Deferred)
Amendment Flag
Amendment Flag
Convertible senior notes, fair value
Long-Term Debt, Fair Value
Entity Registrant Name
Entity Registrant Name
Payments of cash
Payments to Acquire Businesses, Gross
Adjustment to Non-PEO NEO Compensation Footnote
Adjustment to Non-PEO NEO Compensation Footnote [Text Block]
Stock Appreciation Rights (SARs)
Stock Appreciation Rights (SARs) [Member]
Depreciation and amortization expense
Depreciation, Depletion and Amortization
Gross profit
Gross Profit
Loss on lease termination and right-of-use asset impairment charges
Gain (Loss) On Termination Of Lease And Operating Lease, Impairment Loss
Gain (Loss) On Termination Of Lease And Operating Lease, Impairment Loss
Foreign currency translation gains (losses)
Foreign currency translation gains (losses)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent
Schedule of Reconciliation of Change in Estimated Warranty Liabilities
Schedule of Product Warranty Liability [Table Text Block]
Current portion of convertible senior notes, net
Convertible Debt, Current
Fair Value as of Grant Date
Award Grant Date Fair Value
Customer Concentration Risk
Customer Concentration Risk [Member]
Convertible Senior Notes
Convertible Senior Notes [Member]
Convertible Senior Notes [Member]
Level 2
Fair Value, Inputs, Level 2 [Member]
Debt
Debt Disclosure [Text Block]
Unamortized debt issuance costs
Unamortized debt issuance costs
Debt Issuance Costs, Net
Fair Value Hierarchy and NAV [Domain]
Fair Value Hierarchy and NAV [Domain]
Geographical
Geographical [Domain]
Recovery of Erroneously Awarded Compensation Disclosure [Line Items]
Principal amount:
Debt Instrument, Face Amount
Schedule of Disaggregation of Revenue
Disaggregation of Revenue [Table Text Block]
Balance at beginning of the period
Balance at end of the period
Total warranty reserve
Standard and Extended Product Warranty Accrual
Entity Address, Postal Zip Code
Entity Address, Postal Zip Code
Schedule of Compensation Cost Included in Consolidated Statement of Operations
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
Restatement Determination Date:
Restatement Determination Date [Axis]
One to Two Years
Debt Securities, Available-For-Sale, Fair Value, Maturity, Allocated And Single Maturity Date, After Year One Through Two
Debt Securities, Available-For-Sale, Fair Value, Maturity, Allocated And Single Maturity Date, After Year One Through Two
Title of 12(b) Security
Title of 12(b) Security
Concentration Risk Type
Concentration Risk Type [Axis]
Common stock, $0.001 par value; 200,000 shares authorized, 66,568 and 66,264 shares issued and outstanding at March 31, 2025 and December 31, 2024, respectively.
Common Stock, Value, Issued
Cash and cash equivalents
Cash and Cash Equivalents, at Carrying Value
Cash Cash Equivalents And Short Term Investments [Line Items]
Cash Cash Equivalents And Short Term Investments [Line Items]
Cash cash equivalents and short term investments.
Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested
Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member]
Debt instrument, convertible, threshold trading days
Debt Instrument, Convertible, Threshold Trading Days
Raw materials
Inventory, Raw Materials, Gross
Loss on extinguishment of debt
Loss on extinguishment of debt
Gain (Loss) on Extinguishment of Debt
Financing Activities
Net Cash Provided by (Used in) Financing Activities [Abstract]
Convertible senior notes, net - long-term
Convertible Debt, Noncurrent
Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested
Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member]
Shares authorized for issuance pursuant to awards granted under the ESPP
Share-Based Payment Arrangement [Member]
Finished goods
Inventory, Finished Goods, Gross
Awards granted under the ESPP
Employee Stock [Member]
Net loss per share - basic (in dollars per share)
Earnings Per Share, Basic
Accounts payable and accrued expenses
Increase (Decrease) in Accounts Payable
Debt instrument, initial cap price per share (in dollars per share)
Option Indexed To Issuers Equity, Cap Price
Option Indexed To Issuers Equity Cap Price
Adjustment To PEO Compensation, Footnote
Adjustment To PEO Compensation, Footnote [Text Block]
Award Timing MNPI Disclosure
Award Timing MNPI Disclosure [Text Block]
Movement in Standard and Extended Product Warranty Accrual, Increase (Decrease) [Roll Forward]
Movement in Standard and Extended Product Warranty Accrual, Increase (Decrease) [Roll Forward]
Acquired in-process research and development expenses
Acquired in-process research and development expenses
Research and Development Asset Acquired in Transaction Other than Business Combination or Joint Venture Formation, Writeoff
Purchases of property and equipment included in accounts payable
Capital Expenditures Incurred but Not yet Paid
Aggregate Pension Adjustments Service Cost
Aggregate Pension Adjustments Service Cost [Member]
Compensation Actually Paid vs. Other Measure
Compensation Actually Paid vs. Other Measure [Text Block]
Total current liabilities
Liabilities, Current
Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year
Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member]
Total assets
Assets
Cost of sales
Cost of Goods and Services Sold
RSU granted (in shares)
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period
Insulin Pump
Insulin Pump [Member]
Insulin pump.
Purchases of property and equipment
Payments to Acquire Property, Plant, and Equipment
Other long-term liabilities
Other Liabilities, Noncurrent
Forgone Recovery due to Violation of Home Country Law, Amount
Forgone Recovery due to Violation of Home Country Law, Amount
Commitments and contingencies (Note 13)
Commitments and Contingencies
Acquisitions
Asset Acquisition [Text Block]
Termination Date
Trading Arrangement Termination Date
Class of Warrant or Right [Domain]
Class of Warrant or Right [Domain]
Warrants exercise price (in dollars per share)
Class of Warrant or Right, Exercise Price of Warrants or Rights
2026
Lessee, Operating Lease, Liability, to be Paid, Year Two
Debt instrument, convertible, threshold percentage of stock price trigger
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger
Entity Address, City or Town
Entity Address, City or Town
Operating Lease Right-of-Use Assets and Liabilities
Lessee, Leases [Policy Text Block]
Debt Instrument [Axis]
Debt Instrument [Axis]
Proceeds from maturities and redemptions of short-term investments
Proceeds from Maturities, Prepayments and Calls of Short-Term Investments
Total stock-based compensation expense
Share-Based Payment Arrangement, Expense
Net loss
Net loss
Net Income (Loss) Attributable to Parent
Trading Arrangement:
Trading Arrangement [Axis]
Investments, Debt and Equity Securities [Abstract]
Pay vs Performance Disclosure, Table
Pay vs Performance [Table Text Block]
Area of office space leased
Area of Real Estate Property
Equity Awards Adjustments, Excluding Value Reported in Compensation Table
Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member]
Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year
Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member]
Entity File Number
Entity File Number
Document Fiscal Year Focus
Document Fiscal Year Focus
Estimated Fair Value
Debt Securities, Available-for-Sale, Maturity, Allocated and Single Maturity Date, Fair Value
Income Statement [Abstract]
Income Statement [Abstract]
Entity Address, Address Line One
Entity Address, Address Line One
Debt Instrument, Name [Domain]
Debt Instrument, Name [Domain]
Effect of foreign exchange rate changes on cash
Effect of Exchange Rate on Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Continuing Operations
Lease term
Lessee, Operating Lease, Term of Contract
Total assets
Assets, Fair Value Disclosure
Name
Forgone Recovery, Individual Name
Weighted-average remaining lease term (in years)
Operating Lease, Weighted Average Remaining Lease Term
Document Period End Date
Document Period End Date
Strategic Investments
Investment, Policy [Policy Text Block]
Award Timing MNPI Considered
Award Timing MNPI Considered [Flag]
Total undiscounted lease payments
Lessee, Operating Lease, Liability, to be Paid
Two to Three Years
Debt Securities, Available-For-Sale, Fair Value, Maturity, Allocated And Single Maturity Date, After Year Two Through Three
Debt Securities, Available-For-Sale, Fair Value, Maturity, Allocated And Single Maturity Date, After Year Two Through Three
Insider Trading Arrangements [Line Items]
Outstanding Aggregate Erroneous Compensation Amount
Outstanding Aggregate Erroneous Compensation Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
2027
Lessee, Operating Lease, Liability, to be Paid, Year Three
PEO Actually Paid Compensation Amount
PEO Actually Paid Compensation Amount
Adjustment to Compensation:
Adjustment to Compensation [Axis]
Prepaid and other current assets
Prepaid Expense and Other Assets, Current
Long term debt assumed
Asset Acquisition, Liabilities, Long Term Debt Assumed
Asset Acquisition, Liabilities, Long Term Debt Assumed
Document Transition Report
Document Transition Report
Schedule of Revenue by Major Customers, by Reporting Segments [Table]
Schedule of Revenue by Major Customers, by Reporting Segments [Table]
Document Quarterly Report
Document Quarterly Report
Accumulated other comprehensive income (loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax
Entity Current Reporting Status
Entity Current Reporting Status
Accumulated Deficit
Retained Earnings [Member]
Amortization of debt issuance costs
Amortization of debt issuance costs
Amortization of Debt Issuance Costs
Pension Adjustments Service Cost
Pension Adjustments Service Cost [Member]
Asset Acquisition [Domain]
Asset Acquisition [Domain]
Weighted average shares used to compute basic net loss per share (in shares)
Weighted Average Number of Shares Outstanding, Basic
Stock Price or TSR Estimation Method
Stock Price or TSR Estimation Method [Text Block]
Unvested restricted stock units
Shares underlying unvested restricted stock units
Restricted Stock Units (RSUs)
Restricted Stock Units (RSUs) [Member]
Increase (Decrease) in Stockholders' Equity
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Executive Category:
Executive Category [Axis]
Name
Awards Close in Time to MNPI Disclosures, Individual Name
Entity Filer Category
Entity Filer Category
Additional earnout payment
Asset Acquisition, Contingent Consideration Arrangements, Range of Outcomes, Value, High
Asset Acquisition, Contingent Consideration Arrangements, Range of Outcomes, Value, High
Schedule of Shares of Common Stock Reserved for Future Issuance
Schedule Of Common Stock Reserved For Future Issuance [Table Text Block]
Schedule of common stock reserved for future issuance.
Income Statement Location [Domain]
Statement of Income Location, Balance [Domain]
Company Selected Measure Name
Company Selected Measure Name