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

Summary of Significant Accounting Policies - Summary of Components of Accumulated Other Comprehensive Income (Loss) (Details)

Summary of Significant Accounting Policies - Summary of Components of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	$ 344,621	$ 310,424	$ 227,041
Other comprehensive income (loss)	562	(811)	452
Ending Balance	349,623	344,621	310,424
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	271	394
Other comprehensive income (loss)	857	(123)
Ending Balance	1,128	271	394
Unrealized Gains (Losses) on Marketable Securities
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	6
Other comprehensive income (loss)	(6)	6
Ending Balance		6
Unrealized Gains (Losses) on Cash Flow Hedges
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(364)	330
Other comprehensive income (loss)	(289)	(694)
Ending Balance	(653)	(364)	330
Accumulated other comprehensive income (loss)
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	(87)	724	272
Other comprehensive income (loss)	562	(811)	452
Ending Balance	$ 475	$ (87)	$ 724

- Definition

Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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