Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Additional Information (Details)

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Summary of Significant Accounting Policies - Additional Information (Details)
 12 Months Ended
Dec. 31, 2021
USD ($)
Customer
Segment
Dec. 31, 2020
USD ($)
Customer
Dec. 31, 2019
USD ($)
Customer
Significant Accounting Policies [Line Items]      
Standard warranty period offered 3 years    
Cash payments received in advance of satisfying performance obligations $ 6,764,000 $ 5,258,000  
Performance obligation partially offset of revenue recognized   5,866,000 $ 5,908,000
Deferred capped rental revenue $ 0 0  
Rental revenue earned 30 days    
Product warranty description The Company generally provides a warranty against defects in material and workmanship. The Company provides a 3-year, 5-year or lifetime warranty on Inogen One systems sold and a 3-year and lifetime warranty on Inogen At Home systems sold. The Tidal Assist® Ventilator (TAV®) system has a 1-year and a 3-year warranty. The Company also offers a lifetime warranty for direct-to-consumer sales of its oxygen concentrators.    
Accounts receivable, net $ 24,452,000 29,717,000  
Preacquisition loss recoveries 630,000 672,000  
Increase in net rental revenue related to prior years $ 877,000 $ 575,000  
Percentage of Non-US revenue invoiced in Euros 74.10% 73.60% 70.20%
Transfer of inventory to rental equipment $ 906,000 $ 1,970,000 $ 1,043,000
Salvage value of expenditures for additions, improvements and replacements 0    
Repairs and maintenance expense 3,387,000 2,527,000 2,854,000
Depreciation and amortization 12,853,000 9,577,000 9,674,000
Impairments of long-lived assets 0 0  
Goodwill impairment loss 0 0  
Advertising costs 35,183,000 34,180,000 40,251,000
Other income (expense) (710,000) 5,836,000 (229,000)
General and administrative $ 37,852,000 38,605,000 37,121,000
Number of operating segments | Segment 1    
Number of reportable segments | Segment 1    
ASU 2019-12      
Significant Accounting Policies [Line Items]      
Change in accounting principle, accounting standards update, adopted true    
Change in accounting principle, accounting standards update, adoption date Jan. 01, 2021    
Change in accounting principle, accounting standards update, immaterial effect true    
CARES Act      
Significant Accounting Policies [Line Items]      
Grant amount received   6,200,000  
Other income (expense)   5,300,000  
General and administrative   900,000  
Construction in Process and Computer Software or Development Cost      
Significant Accounting Policies [Line Items]      
Depreciation and amortization $ 0 0 $ 0
Other Noncurrent Assets      
Significant Accounting Policies [Line Items]      
Noncurrent inventories expected to be realized or consumed 1,943,000 1,153,000  
Prepaid Expenses And Other Current Assets      
Significant Accounting Policies [Line Items]      
Inventory raw materials 15,426,000    
Customer Concentration Risk | Customer One      
Significant Accounting Policies [Line Items]      
Accounts receivable, net $ 5,945,000 8,417,000  
Customer Concentration Risk | Customer Two      
Significant Accounting Policies [Line Items]      
Accounts receivable, net   $ 7,044,000  
Sales Revenue, Net | Customer Concentration Risk      
Significant Accounting Policies [Line Items]      
Number of customers | Customer   1 0
Net Accounts Receivable | Customer Concentration Risk      
Significant Accounting Policies [Line Items]      
Number of customers | Customer 1 2  
Raw materials | Supplier Concentration Risk | Vendor one      
Significant Accounting Policies [Line Items]      
Concentration Risk, Percentage 16.30% 20.70%  
Raw materials | Supplier Concentration Risk | Vendor two      
Significant Accounting Policies [Line Items]      
Concentration Risk, Percentage 12.10% 11.70%  
Raw materials | Supplier Concentration Risk | Vendor three      
Significant Accounting Policies [Line Items]      
Concentration Risk, Percentage 9.90% 9.30%  
Fair Value Measurements Recurring | Level 3 | Maximum      
Significant Accounting Policies [Line Items]      
Earnout Liability $ 31,400,000    
Forward Contracts      
Significant Accounting Policies [Line Items]      
Accounts receivable, net 1,671,000    
Related payable   $ 863,000  
Lifetime Warranties | Direct-to-Consumer      
Significant Accounting Policies [Line Items]      
Deferred revenue   17,976,000 $ 17,078,000
Medicare's Service Reimbursement Programs | Customer Concentration Risk      
Significant Accounting Policies [Line Items]      
Accounts receivable, net $ 2,685,000 $ 1,882,000  
Medicare's Service Reimbursement Programs | Sales Revenue, Net | Customer Concentration Risk      
Significant Accounting Policies [Line Items]      
Concentration Risk, Percentage 10.60% 7.50% 4.80%
Medicare's Service Reimbursement Programs | Net Accounts Receivable | Customer Concentration Risk      
Significant Accounting Policies [Line Items]      
Concentration Risk, Percentage 11.00% 6.30%  
Medicare's Service Reimbursement Programs | Rental Revenue | Customer Concentration Risk      
Significant Accounting Policies [Line Items]      
Concentration Risk, Percentage 81.90% 81.50% 81.10%