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Income taxes - Schedule of Components of Income (Loss) Before Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Domestic	$ (21,673)		$ 3,715	$ 24,479	$ 17,405
Foreign	500		(25)	(410)	551
Income (loss) before provision for income taxes	$ (21,173)	$ 1,123	$ 3,690	$ 24,069	$ 17,956

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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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The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile.

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