Intangible Assets - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Other direct cost of revenues	$ 218	$ 1,231	$ 1,416
Future amortization expense, year one	2,681
Future amortization expense, year two	2,681
Future amortization expense, year three	2,681
Future amortization expense, year four	2,681
Future amortization expense, year five	2,681
Future amortization expense, thereafter	$ 30,482