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

Quarterly report pursuant to Section 13 or 15(d)

Convertible Preferred Stock - Summary of Redeemable Convertible Preferred Stock (Details)

Convertible Preferred Stock - Summary of Redeemable Convertible Preferred Stock (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2013 Series B Redeemable Convertible Preferred Stock	Dec. 31, 2013 Series C Redeemable Convertible Preferred Stock	Dec. 31, 2013 Series D Redeemable Convertible Preferred Stock	Dec. 31, 2013 Series D Redeemable Convertible Preferred Stock Minimum	Dec. 31, 2013 Series D Redeemable Convertible Preferred Stock Maximum	Dec. 31, 2013 Series E Redeemable Convertible Preferred Stock	Dec. 31, 2013 Series E Redeemable Convertible Preferred Stock Minimum	Dec. 31, 2013 Series E Redeemable Convertible Preferred Stock Maximum	Dec. 31, 2013 Series F Redeemable Convertible Preferred Stock	Dec. 31, 2013 Series F Redeemable Convertible Preferred Stock Minimum	Dec. 31, 2013 Series F Redeemable Convertible Preferred Stock Maximum	Dec. 31, 2013 Series G Redeemable Convertible Preferred Stock	Sep. 30, 2014 Redeemable convertible preferred stock	Dec. 31, 2013 Redeemable convertible preferred stock	Dec. 31, 2013 Prior IPO Series B Redeemable Convertible Preferred Stock	Dec. 31, 2013 Prior IPO Series C Redeemable Convertible Preferred Stock	Dec. 31, 2013 Prior IPO Series D Redeemable Convertible Preferred Stock	Dec. 31, 2013 Prior IPO Series E Redeemable Convertible Preferred Stock	Dec. 31, 2013 Prior IPO Series F Redeemable Convertible Preferred Stock	Dec. 31, 2013 Prior IPO Series G Redeemable Convertible Preferred Stock	Dec. 31, 2013 Prior IPO Redeemable convertible preferred stock
Temporary Equity [Line Items]
Shares authorized		500,000	400,000	1,700,000			1,700,000			2,800,000			2,900,000		10,000,000
Shares issued														0	9,541,631	425,511	365,903	1,573,126	1,634,874	2,701,957	2,840,260	9,541,631
Par value		$ 0.001	$ 0.001	$ 0.001			$ 0.001			$ 0.001			$ 0.001	$ 0.001	$ 0.001
Conversion rate	1.01706	1.45108	1.73014	1.87951			2.69244			1.0000			1.0000
Liquidation preference per share	$ 3.750	$ 11.880	$ 17.580	$ 21.900			$ 19.224			$ 7.140			$ 14.083
Dividend rate	5.00%	5.00%	8.00%	8.00%			8.00%			8.00%			8.00%
Issue date	May 2002	July 2003	June 2004		July 2005	July 2007		October 2007	February 2009		February 2010	June 2010	March 2012
Redemption date		Jan. 01, 2016	Jan. 01, 2016	Jan. 01, 2016			Jan. 01, 2016			Jan. 01, 2016			Jan. 01, 2016

- Definition

The per share liquidation preference (or restrictions) of stock classified as temporary equity that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.

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- Definition

The maximum number of securities classified as temporary equity that are permitted to be issued by an entity's charter and bylaws. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.

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- Definition

The number of securities classified as temporary equity that have been sold (or granted) to the entity's shareholders. Securities issued include securities outstanding and securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.

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