Income Taxes - Deferred Tax Assets and Liabilities (Detail) - USD ($) $ in Thousands	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Deferred income tax assets
Net operating loss carry-forward	$ 25,630	$ 21,913	$ 23,471
Stock-based compensation	1,675	3,775	3,996
Other	3,887	2,284	1,228
Gross deferred income tax assets	31,192	27,972	28,695
Valuation allowance	(5,287)	(15,977)	(27,972)
Net deferred income tax assets	25,905	11,995	723
Deferred income tax liabilities
Depreciation and amortization	(2,627)	(1,648)	(678)
Intangibles and goodwill	(10,315)	(10,356)	0
Other	0	0	(5)
Net deferred income tax assets	$ 12,963		$ 40
Net deferred income tax liabilities		$ (9)