Inogen, Inc. Annual report [Section 13 and 15(d), not S-K Item 405]

Annual report [Section 13 and 15(d), not S-K Item 405]

Stockholders' Equity - Additional Information (Details)

Stockholders' Equity - Additional Information (Details)	12 Months Ended
Stockholders' Equity - Additional Information (Details)	Dec. 31, 2024 USD ($) Vote $ / shares shares	Dec. 31, 2023 USD ($) $ / shares shares	Dec. 31, 2022 USD ($) $ / shares shares	Dec. 31, 2021 USD ($)	Jun. 07, 2024 shares
Class Of Stock [Line Items]
Number of voting rights per share of common stock \| Vote	1
Preferred stock, shares authorized	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Dividends declared \| $	$ 0	$ 0	$ 0
Total intrinsic value of options exercised \| $	$ 0	735,000	309,000
Total weighted average fair value of stock options granted \| $		$ 0	$ 0	$ 0
Monte Carlo Simulation Model
Class Of Stock [Line Items]
Weighted-average grant date fair value per share, Granted \| $ / shares	$ 6.94
Time based restricted stock units
Class Of Stock [Line Items]
Vesting period	4 years
Grants of units unvested	890,300	1,214,144	769,976
Performance Based Awards
Class Of Stock [Line Items]
Vesting period	3 years
Time based restricted stock awards
Class Of Stock [Line Items]
Vesting period	4 years
Performance and time based restricted stock awards
Class Of Stock [Line Items]
Vesting period	3 years
Performance and time based restricted stock units
Class Of Stock [Line Items]
Vesting period	3 years
Grants of units unvested	587,768	621,990	164,722
Restricted stock units and restricted stock awards
Class Of Stock [Line Items]
Rate of reduced stock-based compensation expense for estimated forfeiture	8.30%	5.30%	4.10%
Restricted stock units
Class Of Stock [Line Items]
Amount expected to recognized over weighted-average period	1 year 8 months 12 days
Unrecognized compensation cost related to unvested employee excluding estimated forfeitures \| $	$ 7,478,000
Weighted-average grant date fair value per share, Granted \| $ / shares	$ 7.28	$ 12.29	$ 29.76
Grants of units unvested	1,478,068	1,836,134	934,698
Maximum \| Stock Option Plan Awards
Class Of Stock [Line Items]
Stock option period, expiration	10 years
Vesting period	4 years
Maximum \| Performance Based Awards
Class Of Stock [Line Items]
Percentage payout for performance-based equity awards	120.00%
Minimum \| Stock Option Plan Awards
Class Of Stock [Line Items]
Stock option period, expiration	7 years
Vesting period	1 year
Minimum \| Performance Based Awards
Class Of Stock [Line Items]
Percentage payout for performance-based equity awards	0.00%
2014 Plan \| Restricted stock units and restricted stock awards
Class Of Stock [Line Items]
Stock option shares outstanding	280,193
2014 ESPP Plan
Class Of Stock [Line Items]
Number of equity awards available for grant	585,409
Number of additional number of shares reserve to provision	179,069
Maximum percentage of common stock eligible to purchase through payroll deductions for participants	15.00%
Employee stock purchases, shares	144,255
Average price per share \| $ / shares	$ 5.62
2023 Plan
Class Of Stock [Line Items]
Stock option shares outstanding	1,299,384
Number of equity awards available for grant	2,393,025
Issued shares of common stock to certain new hire issuable upon	225,000
Number of shares common stock reserved for issuance					1,600,000
2023 Plan \| Shares Reserved but not Issued and Granted under 2014 Plan
Class Of Stock [Line Items]
Number of shares common stock reserved for issuance					2,027,790
2023 Plan \| Maximum \| Awards Granted under 2014 Plan and 2012 Plan
Class Of Stock [Line Items]
Number of shares common stock reserved for issuance					2,950,000
2023 Plan \| Maximum \| Time based restricted stock units
Class Of Stock [Line Items]
Vesting shares	75,000
2023 Plan \| Maximum \| Performance-based restricted stock units
Class Of Stock [Line Items]
Vesting shares	150,000