Annual report pursuant to Section 13 and 15(d)

Nature of Business - Additional Information (Details)

v3.8.0.1
Nature of Business - Additional Information (Details)
$ in Thousands
3 Months Ended 12 Months Ended
May 04, 2017
USD ($)
Dec. 31, 2017
USD ($)
lb
Dec. 31, 2017
USD ($)
Product
lb
Nature Of Business [Line Items]      
Percentage of patients using portable oxygen concentrators     9.10%
Goodwill acquired   $ 2,363 $ 2,363
MedSupport Systems B.V.      
Nature Of Business [Line Items]      
Aggregate payment for acquisition $ 5,831    
Cash paid at closing 5,779    
Net working capital adjustments paid   $ 52  
Cash acquired 1,337    
Intangible assets acquired 1,529    
Goodwill acquired 2,154    
Net assets assumed 811    
MedSupport Systems B.V. | General and Administrative      
Nature Of Business [Line Items]      
Acquisition expenses $ 370    
Inogen Europe Holding B.V.      
Nature Of Business [Line Items]      
Date of incorporation of subsidiary     Apr. 13, 2017
One G4      
Nature Of Business [Line Items]      
Weight of oxygen portable device | lb   2.8 2.8
One G3      
Nature Of Business [Line Items]      
Weight of oxygen portable device | lb   4.8 4.8
One G2      
Nature Of Business [Line Items]      
Weight of oxygen portable device | lb   7.0 7.0
Maximum | One G4      
Nature Of Business [Line Items]      
Estimated battery life of portable oxygen concentrator     2 hours 36 minutes
Maximum | One G3      
Nature Of Business [Line Items]      
Estimated battery life of portable oxygen concentrator     4 hours 42 minutes
Maximum | One G2      
Nature Of Business [Line Items]      
Estimated battery life of portable oxygen concentrator     5 hours
Minimum | Inogen One      
Nature Of Business [Line Items]      
Number of portable oxygen concentrators | Product     362,000