Inogen, Inc. Annual report pursuant to Section 13 and 15(d)

Annual report pursuant to Section 13 and 15(d)

Warrants - Summary of Outstanding Warrants (Details)

Warrants - Summary of Outstanding Warrants (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Class Of Warrant Or Right [Line Items]
Number of warrants	15,218	263,463	384,217
Common stock \| 2017-2019
Class Of Warrant Or Right [Line Items]
Number of warrants	15,218	233,611
Exercise price/share	0.30	0.300
Common stock \| 2017-2019 \| Minimum
Class Of Warrant Or Right [Line Items]
Expiration date	2017	2017
Common stock \| 2017-2019 \| Maximum
Class Of Warrant Or Right [Line Items]
Expiration date	2019	2019
Series C Preferred Stock
Class Of Warrant Or Right [Line Items]
Number of warrants		14,215	14,215
Series C Preferred Stock \| 2015
Class Of Warrant Or Right [Line Items]
Number of warrants		14,215
Exercise price/share		17.580
Expiration date		2015
Series D Preferred Stock
Class Of Warrant Or Right [Line Items]
Number of warrants		11,415	132,169
Series D Preferred Stock \| 2013-2014
Class Of Warrant Or Right [Line Items]
Number of warrants		11,415
Exercise price/share		21.900
Series D Preferred Stock \| 2013-2014 \| Minimum
Class Of Warrant Or Right [Line Items]
Expiration date		2013
Series D Preferred Stock \| 2013-2014 \| Maximum
Class Of Warrant Or Right [Line Items]
Expiration date		2014
Series E Preferred Stock
Class Of Warrant Or Right [Line Items]
Number of warrants		4,222	4,222
Series E Preferred Stock \| 2015
Class Of Warrant Or Right [Line Items]
Number of warrants		3,120
Exercise price/share		9.612
Expiration date		2015
Series E Preferred Stock \| 2016
Class Of Warrant Or Right [Line Items]
Number of warrants		1,102
Exercise price/share		9.612
Expiration date		2016