Inogen, Inc. Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Summary of Stock-based Compensation Expense Recognized in Income Statement (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Class Of Stock [Line Items]
Stock-based compensation expense	$ 1,953	$ 1,016	$ 5,404	$ 2,343
Cost of Revenue
Class Of Stock [Line Items]
Stock-based compensation expense	175	128	454	294
Sales and Marketing
Class Of Stock [Line Items]
Stock-based compensation expense	318	297	859	677
General and Administrative
Class Of Stock [Line Items]
Stock-based compensation expense	1,237	459	3,530	1,068
Research and Development
Class Of Stock [Line Items]
Stock-based compensation expense	$ 223	$ 132	$ 561	$ 304