3.21.1 html 129 320 1 false 48 0 false 7 false false R1.htm 0001001 - Document - Cover Page Sheet http://www.inspiresleep.com/role/CoverPage Cover Page Cover 1 false false R2.htm 1001002 - Statement - BALANCE SHEETS Sheet http://www.inspiresleep.com/role/BALANCESHEETS BALANCE SHEETS Statements 2 false false R3.htm 1002003 - Statement - BALANCE SHEETS (Parenthetical) Sheet http://www.inspiresleep.com/role/BALANCESHEETSParenthetical BALANCE SHEETS (Parenthetical) Statements 3 false false R4.htm 1003004 - Statement - STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (Unaudited) Sheet http://www.inspiresleep.com/role/STATEMENTSOFOPERATIONSANDCOMPREHENSIVELOSSUnaudited STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (Unaudited) Statements 4 false false R5.htm 1004005 - Statement - STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) Sheet http://www.inspiresleep.com/role/STATEMENTSOFSTOCKHOLDERSEQUITYUnaudited STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) Statements 5 false false R6.htm 1005006 - Statement - STATEMENTS OF CASH FLOWS (Unaudited) Sheet http://www.inspiresleep.com/role/STATEMENTSOFCASHFLOWSUnaudited STATEMENTS OF CASH FLOWS (Unaudited) Statements 6 false false R7.htm 2101101 - Disclosure - Organization Sheet http://www.inspiresleep.com/role/Organization Organization Notes 7 false false R8.htm 2102102 - Disclosure - Summary of Significant Accounting Policies Sheet http://www.inspiresleep.com/role/SummaryofSignificantAccountingPolicies Summary of Significant Accounting Policies Notes 8 false false R9.htm 2113103 - Disclosure - Investments Sheet http://www.inspiresleep.com/role/Investments Investments Notes 9 false false R10.htm 2116104 - Disclosure - Leases Sheet http://www.inspiresleep.com/role/Leases Leases Notes 10 false false R11.htm 2120105 - Disclosure - Long-Term Debt Sheet http://www.inspiresleep.com/role/LongTermDebt Long-Term Debt Notes 11 false false R12.htm 2123106 - Disclosure - Employee Retirement Plan Sheet http://www.inspiresleep.com/role/EmployeeRetirementPlan Employee Retirement Plan Notes 12 false false R13.htm 2124107 - Disclosure - Stockholders' Equity Sheet http://www.inspiresleep.com/role/StockholdersEquity Stockholders' Equity Notes 13 false false R14.htm 2132108 - Disclosure - Income Taxes Sheet http://www.inspiresleep.com/role/IncomeTaxes Income Taxes Notes 14 false false R15.htm 2134109 - Disclosure - Segment Reporting and Revenue Disaggregation Sheet http://www.inspiresleep.com/role/SegmentReportingandRevenueDisaggregation Segment Reporting and Revenue Disaggregation Notes 15 false false R16.htm 2137110 - Disclosure - Loss Per Share Sheet http://www.inspiresleep.com/role/LossPerShare Loss Per Share Notes 16 false false R17.htm 2203201 - Disclosure - Summary of Significant Accounting Policies (Policies) Sheet http://www.inspiresleep.com/role/SummaryofSignificantAccountingPoliciesPolicies Summary of Significant Accounting Policies (Policies) Policies http://www.inspiresleep.com/role/SummaryofSignificantAccountingPolicies 17 false false R18.htm 2304301 - Disclosure - Summary of Significant Accounting Policies (Tables) Sheet http://www.inspiresleep.com/role/SummaryofSignificantAccountingPoliciesTables Summary of Significant Accounting Policies (Tables) Tables http://www.inspiresleep.com/role/SummaryofSignificantAccountingPolicies 18 false false R19.htm 2314302 - Disclosure - Investments (Tables) Sheet http://www.inspiresleep.com/role/InvestmentsTables Investments (Tables) Tables http://www.inspiresleep.com/role/Investments 19 false false R20.htm 2317303 - Disclosure - Leases (Tables) Sheet http://www.inspiresleep.com/role/LeasesTables Leases (Tables) Tables http://www.inspiresleep.com/role/Leases 20 false false R21.htm 2321304 - Disclosure - Long-Term Debt (Tables) Sheet http://www.inspiresleep.com/role/LongTermDebtTables Long-Term Debt (Tables) Tables http://www.inspiresleep.com/role/LongTermDebt 21 false false R22.htm 2325305 - Disclosure - Stockholders' Equity (Tables) Sheet http://www.inspiresleep.com/role/StockholdersEquityTables Stockholders' Equity (Tables) Tables http://www.inspiresleep.com/role/StockholdersEquity 22 false false R23.htm 2335306 - Disclosure - Segment Reporting and Revenue Disaggregation (Tables) Sheet http://www.inspiresleep.com/role/SegmentReportingandRevenueDisaggregationTables Segment Reporting and Revenue Disaggregation (Tables) Tables http://www.inspiresleep.com/role/SegmentReportingandRevenueDisaggregation 23 false false R24.htm 2338307 - Disclosure - Loss Per Share (Tables) Sheet http://www.inspiresleep.com/role/LossPerShareTables Loss Per Share (Tables) Tables http://www.inspiresleep.com/role/LossPerShare 24 false false R25.htm 2405401 - Disclosure - Summary of Significant Accounting Policies - Follow-On Public Offering (Details) Sheet http://www.inspiresleep.com/role/SummaryofSignificantAccountingPoliciesFollowOnPublicOfferingDetails Summary of Significant Accounting Policies - Follow-On Public Offering (Details) Details 25 false false R26.htm 2406402 - Disclosure - Summary of Significant Accounting Policies - Investments (Details) Sheet http://www.inspiresleep.com/role/SummaryofSignificantAccountingPoliciesInvestmentsDetails Summary of Significant Accounting Policies - Investments (Details) Details 26 false false R27.htm 2407403 - Disclosure - Summary of Significant Accounting Policies - Fair Value of Financial Instruments (Details) Sheet http://www.inspiresleep.com/role/SummaryofSignificantAccountingPoliciesFairValueofFinancialInstrumentsDetails Summary of Significant Accounting Policies - Fair Value of Financial Instruments (Details) Details 27 false false R28.htm 2408404 - Disclosure - Summary of Significant Accounting Policies - Inventories (Details) Sheet http://www.inspiresleep.com/role/SummaryofSignificantAccountingPoliciesInventoriesDetails Summary of Significant Accounting Policies - Inventories (Details) Details 28 false false R29.htm 2409405 - Disclosure - Summary of Significant Accounting Policies - Property and Equipment (Details) Sheet http://www.inspiresleep.com/role/SummaryofSignificantAccountingPoliciesPropertyandEquipmentDetails Summary of Significant Accounting Policies - Property and Equipment (Details) Details 29 false false R30.htm 2410406 - Disclosure - Summary of Significant Accounting Policies - Accrued Expenses (Details) Sheet http://www.inspiresleep.com/role/SummaryofSignificantAccountingPoliciesAccruedExpensesDetails Summary of Significant Accounting Policies - Accrued Expenses (Details) Details 30 false false R31.htm 2411407 - Disclosure - Summary of Significant Accounting Policies - Stock Based Compensation (Details) Sheet http://www.inspiresleep.com/role/SummaryofSignificantAccountingPoliciesStockBasedCompensationDetails Summary of Significant Accounting Policies - Stock Based Compensation (Details) Details 31 false false R32.htm 2412408 - Disclosure - Summary of Significant Accounting Policies - Advertising Expenses (Details) Sheet http://www.inspiresleep.com/role/SummaryofSignificantAccountingPoliciesAdvertisingExpensesDetails Summary of Significant Accounting Policies - Advertising Expenses (Details) Details 32 false false R33.htm 2415409 - Disclosure - Investments (Details) Sheet http://www.inspiresleep.com/role/InvestmentsDetails Investments (Details) Details http://www.inspiresleep.com/role/InvestmentsTables 33 false false R34.htm 2418410 - Disclosure - Leases - Overview (Details) Sheet http://www.inspiresleep.com/role/LeasesOverviewDetails Leases - Overview (Details) Details 34 false false R35.htm 2419411 - Disclosure - Leases - Assets and Liabilities (Details) Sheet http://www.inspiresleep.com/role/LeasesAssetsandLiabilitiesDetails Leases - Assets and Liabilities (Details) Details 35 false false R36.htm 2422412 - Disclosure - Long-Term Debt (Details) Sheet http://www.inspiresleep.com/role/LongTermDebtDetails Long-Term Debt (Details) Details http://www.inspiresleep.com/role/LongTermDebtTables 36 false false R37.htm 2426413 - Disclosure - Stockholders' Equity - Stock-Based Compensation (Details) Sheet http://www.inspiresleep.com/role/StockholdersEquityStockBasedCompensationDetails Stockholders' Equity - Stock-Based Compensation (Details) Details 37 false false R38.htm 2427414 - Disclosure - Stockholders' Equity - Stock-Based Compensation Expense Recognized (Details) Sheet http://www.inspiresleep.com/role/StockholdersEquityStockBasedCompensationExpenseRecognizedDetails Stockholders' Equity - Stock-Based Compensation Expense Recognized (Details) Details 38 false false R39.htm 2428415 - Disclosure - Stockholders' Equity - Stock Option Activity (Details) Sheet http://www.inspiresleep.com/role/StockholdersEquityStockOptionActivityDetails Stockholders' Equity - Stock Option Activity (Details) Details 39 false false R40.htm 2429416 - Disclosure - Stockholders' Equity - Assumptions Used to Calculate Fair Value of Options (Details) Sheet http://www.inspiresleep.com/role/StockholdersEquityAssumptionsUsedtoCalculateFairValueofOptionsDetails Stockholders' Equity - Assumptions Used to Calculate Fair Value of Options (Details) Details 40 false false R41.htm 2430417 - Disclosure - Stockholders' Equity - Restricted Stock Units (Details) Sheet http://www.inspiresleep.com/role/StockholdersEquityRestrictedStockUnitsDetails Stockholders' Equity - Restricted Stock Units (Details) Details 41 false false R42.htm 2431418 - Disclosure - Stockholders' Equity - Employee Stock Purchase Plan (Details) Sheet http://www.inspiresleep.com/role/StockholdersEquityEmployeeStockPurchasePlanDetails Stockholders' Equity - Employee Stock Purchase Plan (Details) Details 42 false false R43.htm 2433419 - Disclosure - Income Taxes (Details) Sheet http://www.inspiresleep.com/role/IncomeTaxesDetails Income Taxes (Details) Details http://www.inspiresleep.com/role/IncomeTaxes 43 false false R44.htm 2436420 - Disclosure - Segment Reporting and Revenue Disaggregation (Details) Sheet http://www.inspiresleep.com/role/SegmentReportingandRevenueDisaggregationDetails Segment Reporting and Revenue Disaggregation (Details) Details http://www.inspiresleep.com/role/SegmentReportingandRevenueDisaggregationTables 44 false false R45.htm 2439421 - Disclosure - Loss Per Share (Details) Sheet http://www.inspiresleep.com/role/LossPerShareDetails Loss Per Share (Details) Details http://www.inspiresleep.com/role/LossPerShareTables 45 false false R9999.htm Uncategorized Items - insp-20210331.htm Sheet http://xbrl.sec.gov/role/uncategorizedFacts Uncategorized Items - insp-20210331.htm Cover 46 false false All Reports Book All Reports insp-20210331.htm a2021-q1ex31x1.htm a2021-q1ex31x2.htm a2021-q1ex32x1.htm a2021-q1ex32x2.htm insp-20210331.xsd insp-20210331_cal.xml insp-20210331_def.xml insp-20210331_lab.xml insp-20210331_pre.xml insp-20210331_g1.jpg http://fasb.org/us-gaap/2020-01-31 http://fasb.org/srt/2020-01-31 http://xbrl.sec.gov/dei/2020-01-31 http://xbrl.sec.gov/country/2020-01-31 true true