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Income Taxes - Schedule of Pretax Loss from Domestic and Foreign Operations (Detail) - Rocket Lab USA, Inc. - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
US loss before income taxes	$ (56,439)	$ (34,076)
Foreign income before income taxes	1,901	4,070
Pretax loss from operations	$ (54,538)	$ (30,006)

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- Definition

The portion of earnings or loss from continuing operations before income taxes that is attributable to domestic operations.

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Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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