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Accrued expenses Accrued Liabilities, Current Interest income and other, net Interest and Other Income Net cash provided by (used in) financing activities Net Cash Provided by (Used in) Financing Activities Convertible senior notes, fair value Long-Term Debt, Fair Value Accounting Policies [Abstract] Accounting Policies [Abstract] Total interest expense Interest Expense, Debt Employee-related liabilities Employee-related Liabilities, Current Line of Credit Line of Credit [Member] Schedule of Reconciliation of Change in Estimated Allowance for Doubtful Accounts Financing Receivable, Allowance for Credit Loss [Table Text Block] Loss before income taxes Income (loss) before taxes Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Stockholders’ equity: Stockholders' Equity Attributable to Parent [Abstract] Prepaid and other current assets Prepaid Expense and Other Assets, Current Slim cartridges and infusion sets Slim Cartridges And Infusion Sets [Member] Slim cartridges and infusion sets. 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Statement [Table] Statement [Table] Effective interest rate Debt Instrument, Interest Rate, Effective Percentage Operating lease extension period Lessee, Operating Lease, Renewal Term Document Quarterly Report Document Quarterly Report Secured Overnight Financing Rate (SOFR) Secured Overnight Financing Rate (SOFR) [Member] Secured Overnight Financing Rate (SOFR) Letter of Credit Letter of Credit [Member] Current assets: Assets, Current [Abstract] Operating lease liabilities - long-term Operating lease liabilities - long-term Operating Lease, Liability, Noncurrent Range [Axis] Statistical Measurement [Axis] Asset Acquisition [Domain] Asset Acquisition [Domain] Accumulated deficit Retained Earnings (Accumulated Deficit) Purchase of common stock under ESPP (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Purchased for Award Other Other Operating Activities, Cash Flow Statement Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss, Current Equity Components [Axis] Equity Components [Axis] Vesting period of remaining stock (in years) Share Based Compensation Arrangement By Share Based Payment Award Award Remaining Vesting Period Share based compensation arrangement by share based payment award award remaining vesting period. 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Common Stock, Value, Issued Debt Instrument, Name [Domain] Debt Instrument, Name [Domain] Provision for warranties issued during the period Standard and Extended Product Warranty Accrual, Increase for Warranties Issued 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 Vesting of restricted stock units, net of shares withheld for taxes (in shares) Stock Issued During Period, Shares, Restricted Stock Award, Gross Conversion price (in dollars per share) Debt Instrument, Convertible, Conversion Price Schedule of Anti-Dilutive Securities Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block] 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] Convertible senior notes Convertible Debt [Member] Short-term lease cost Short-Term Lease, Cost 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 Commitments and Contingencies Commitments and Contingencies Disclosure [Text Block] Current liabilities: Liabilities, Current [Abstract] Common stock, shares issued (in shares) Common Stock, Shares, Issued Deferred revenue Contract with Customer, Liability, Current Cash equivalents Cash Equivalents [Member] Minimum age of employees for defined contribution plan Defined Contribution Plan Minimum Age Of Employee Defined contribution plan minimum age of employee. 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Comprehensive loss Comprehensive Income (Loss), Net of Tax, Attributable to Parent Guarantee liability current Guarantor Obligations, Current Carrying Value Gross Unrealized Gain Debt Securities, Available-for-Sale, Accumulated Gross Unrealized Gain, before Tax Entity Current Reporting Status Entity Current Reporting Status Other current liabilities Other Liabilities, Current Other long-term assets Other Assets, Noncurrent Employee-related liabilities Increase (Decrease) in Employee Related Liabilities Depreciation and amortization expense Depreciation, Depletion and Amortization Disaggregation of Revenue [Table] Disaggregation of Revenue [Table] Lease term Lessee, Operating Lease, Term of Contract Schedule of Interest Expense Recognized Interest Income and Interest Expense Disclosure [Table Text Block] Offering period Offering Period Offering period. 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Accumulated other comprehensive loss Accumulated Other Comprehensive Income (Loss), Net of Tax Schedule of Business Acquisitions, by Acquisition [Table] Schedule of Business Acquisitions, by Acquisition [Table] Shares authorized for issuance pursuant to awards granted under the ESPP Share-Based Payment Arrangement [Member] Cash and cash equivalents Cash and Cash Equivalents, at Carrying Value Conversion Instance, 98% Conversion Instance, 98% [Member] Conversion Instance, 98% [Member] Work-in-process Inventory, Work in Process, Gross Deferred revenue Increase (Decrease) in Contract with Customer, Liability Total current assets Assets, Current Business Acquisition [Line Items] Business Acquisition [Line Items] Entity Small Business Entity Small Business Schedule of Stockholders' Equity Common Stock Warrants Schedule of Stockholders' Equity Note, Warrants or Rights [Table Text Block] Beginning balance (in shares) Ending balance (in shares) Shares, Outstanding Fair Value, Measurement Frequency [Domain] Measurement Frequency [Domain] Stockholders' Equity Stockholders' Equity Note Disclosure [Text Block] Line of Credit Facility [Table] Line of Credit Facility [Table] Summary of Significant Accounting Policies Significant Accounting Policies [Text Block] Debt instrument, convertible, threshold trading days Debt Instrument, Convertible, Threshold Trading Days Accounts receivable, net Increase (Decrease) in Accounts Receivable Title of 12(b) Security Title of 12(b) Security Organization and Basis of Presentation Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] Short-term investments Short-Term Investments Capped call transactions net cost Debt Instrument, Capped Call, Net Cost Debt Instrument, Capped Call, Net Cost Debt Instrument [Line Items] Debt Instrument [Line Items] Business Combination and Asset Acquisition [Abstract] Common Stock Warrant Expiring March 2027 Common Stock Warrant Expiring March 2027 [Member] Common Stock Warrant Expiring March 2027 [Member] Operating lease, liability Present value of operating lease liabilities Operating Lease, Liability U.S. Government-sponsored enterprises US Government Agencies Debt Securities [Member] Business Segment and Geographic Information Segment Reporting Disclosure [Text Block] Selling, general and administrative Selling, General and Administrative Expenses [Member] Summary Of Significant Accounting Policies [Line Items] Summary Of Significant Accounting Policies [Line Items] Summary of significant accounting policies. Investments, Debt and Equity Securities [Abstract] Shares authorized for future equity award grants Authorized For Future Option Grants [Member] Authorized for future option grants. Liabilities and Stockholders’ Equity Liabilities and Equity [Abstract] Foreign currency translation gains (losses) Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax, Portion Attributable to Parent U.S. Treasury securities US Treasury Securities [Member] Amortized Cost Debt Securities, Available-for-Sale, Amortized Cost Inventories Total inventories Inventory, Net Accounts payable Accounts Payable, Current Debt instrument, convertible, threshold percentage of stock price trigger Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger Tech Center Lease Phase I Tech Center Lease Phase I [Member] Tech Center Lease Phase I Schedule of Contractual Maturities of Available -For-Sale Debt Securities Investments Classified by Contractual Maturity Date [Table Text Block] Warrants to purchase common stock Shares underlying outstanding warrants Warrant [Member] Entity Filer Category Entity Filer Category Proceeds (payments of tax withholdings) related to issuance of common stock under Company stock plans, net Proceeds from Issuance of Common Stock Weighted average shares used to compute basic net loss per share (in shares) Weighted Average Number of Shares Outstanding, Basic United States UNITED STATES Asset acquisition, purchase price Asset Acquisition, Consideration Transferred Total stock-based compensation expense Share-Based Payment Arrangement, Expense Intangible costs in accounts payable and other long-term liabilities Intangible Costs In Other Current And Other Long-Term Liabilities Intangible Costs In Other Current And Other Long-Term Liabilities Supplemental schedule of non-cash investing and financing activities Noncash Investing and Financing Items [Abstract] Commitments and contingencies (Note 13) Commitments and Contingencies Security Exchange Name Security Exchange Name Class of Warrant or Right [Domain] Class of Warrant or Right [Domain] Development Milestones Development Milestones [Member] Development Milestones [Member] Accounts receivable, net Accounts Receivable, after Allowance for Credit Loss Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] Outstanding letters of credit Unsecured letter of credit outstanding Letters of Credit Outstanding, Amount Convertible senior notes Convertible Senior Notes [Member] Convertible Senior Notes [Member] Sales Total Sales Revenue from Contract with Customer, Excluding Assessed Tax Increase in monthly base rent Lessee, Operating Lease, Monthly Increase In Base Rent Lessee, Operating Lease, Monthly Increase In Base Rent Common stock reserved for future issuance (in shares) Common Stock, Capital Shares Reserved for Future Issuance Cover [Abstract] Cover [Abstract] Schedule of Long-term Debt Instruments [Table] Schedule of Long-Term Debt Instruments [Table] 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 Operating Lease Right-of-Use Assets and Liabilities Lessee, Leases [Policy Text Block] Level 3 Fair Value, Inputs, Level 3 [Member] Less: allowance for credit losses Balance at beginning of the period Balance at end of the period Accounts Receivable, Allowance for Credit Loss Segment Reporting [Abstract] Forecast Forecast [Member] 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. Proceeds (payments of tax withholdings) related to issuance of common stock under Company stock plans, net Payment, Tax Withholding, Share-Based Payment Arrangement Total liabilities and stockholders’ equity Liabilities and Equity Debt instrument, term Debt Instrument, Term Amortization of debt issuance costs Amortization of Debt Issuance Costs Long-term Debt, Type [Axis] Long-Term Debt, Type [Axis] Outside the United States Non-US [Member] Warranty Reserve Standard Product Warranty, Policy [Policy Text Block] Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Level 2 Fair Value, Inputs, Level 2 [Member] 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 Current Fiscal Year End Date Current Fiscal Year End Date Less: amount representing interest Lessee, Operating Lease, Liability, Undiscounted Excess Amount Vesting [Axis] Vesting [Axis] Net loss per share - diluted (in dollars per share) Earnings Per Share, Diluted Sale of Stock [Domain] Sale of Stock [Domain] Tranche Two Share-Based Payment Arrangement, Tranche Two [Member] Vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Stock-based compensation expense APIC, Share-Based Payment Arrangement, Increase for Cost Recognition Fair value of common stock warrants Fair Value Adjustment of Warrants Concentration Risk Type Concentration Risk Type [Axis] Total current liabilities Liabilities, Current 2025 Lessee, Operating Lease, Liability, to be Paid, Year Two Schedule of Accounts Receivable Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block] Customer Concentration Risk Customer Concentration Risk [Member] Insulin Pump Insulin Pump [Member] Insulin pump. Maximum term of stock options (in years) Share-Based Compensation Arrangement by Share-Based Payment Award, Expiration Period Corporate debt securities Corporate debt securities Corporate Debt Securities [Member] Commitment fee percentage Line of Credit Facility, Commitment Fee Percentage Revenue from Contract with Customer Benchmark Revenue from Contract with Customer Benchmark [Member] Schedule of Future Minimum Payments Under Non-cancellable Operating Leases Lessee, Operating Lease, Liability, Maturity [Table Text Block] Entity Address, Address Line One Entity Address, Address Line One Total stock-based compensation expense capitalized as part of cost of inventory Share-Based Payment Arrangement, Amount Capitalized Product and Service [Axis] Product and Service Product and Service [Axis] Lawsuits dismissed Loss Contingency, Claims Dismissed, Number Purchase of strategic investment Payments To Acquire Strategic Investments Payments To Acquire Strategic Investments Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] Total available balance Line of Credit Facility, Remaining Borrowing Capacity Credit Facility [Axis] Credit Facility [Axis] Equity [Abstract] Equity [Abstract] Debt Conversion Description [Axis] Debt Conversion Description [Axis] Tech Center Lease, Additional Space Tech Center Lease, Additional Space [Member] Tech Center Lease, Additional Space Entity Tax Identification Number Entity Tax Identification Number Monthly base rent Lessee, Operating Lease, Monthly Base Rent Lessee, Operating Lease, Monthly Base Rent Reclassifications Reclassification, Comparability Adjustment [Policy Text Block] Debt Conversion, Name [Domain] Debt Conversion, Name [Domain] Schedule of Disaggregation of Revenue Disaggregation of Revenue [Table 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] Research and development Research and Development Expense (Excluding Acquired in Process Cost) Net increase (decrease) in cash and cash equivalents Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect Investment owned at cost Investment Owned, at Cost Commercial paper Commercial Paper [Member] Entity Central Index Key Entity Central Index Key Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Measurement Frequency [Axis] Measurement Frequency [Axis] 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] Schedule of Share-based Compensation Arrangements by Share-based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Long term debt assumed Asset Acquisition, Liabilities, Long Term Debt Assumed Asset Acquisition, Liabilities, Long Term Debt Assumed City Area Code City Area Code Assets Assets [Abstract] Long-term Debt, Type [Domain] Long-Term Debt, Type [Domain] Retirement Benefits [Abstract] Statement of Stockholders' Equity [Abstract] Statement of Stockholders' Equity [Abstract] Sale of Stock [Axis] Sale of Stock [Axis] Revenue, Major Customer [Line Items] Revenue, Major Customer [Line Items] Financing Activities Net Cash Provided by (Used in) Financing Activities [Abstract] Acquired in-process research and development expenses Research and Development in Process Net Income (Loss) Per Share Earnings Per Share, Policy [Policy Text Block] Stock-based compensation expense Share-Based Payment Arrangement, Noncash Expense Variable Rate [Axis] Variable Rate [Axis] Outstanding warrants (in shares) Class of Warrant or Right, Outstanding Other long-term liabilities Other Liabilities, Noncurrent Purchases of property and equipment Payments to Acquire Property, Plant, and Equipment Disaggregation of Revenue [Line Items] Disaggregation of Revenue [Line Items] Research and development Research and Development Expense [Member] Operating lease right-of-use assets obtained in exchange for operating lease obligations Right-of-Use Asset Obtained in Exchange for Operating Lease Liability Cost of sales Cost of Sales [Member] Schedule of Convertible Notes Convertible Debt [Table Text Block] 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. Decreases in warranty estimates Standard and Extended Product Warranty Accrual, Increase (Decrease) for Preexisting Warranties