Nature of business - Additional Information (Details)	12 Months Ended
	Dec. 31, 2016 Product lb
Nature Of Business [Line Items]
Percentage of patients using portable oxygen concentrators	8.00%
One G4
Nature Of Business [Line Items]
Weight of oxygen portable device	2.8
One G3
Nature Of Business [Line Items]
Weight of oxygen portable device	4.8
One G2
Nature Of Business [Line Items]
Weight of oxygen portable device	7.0
Inogen One | Minimum
Nature Of Business [Line Items]
Number of portable oxygen concentrators | Product	228,000