CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net loss	$ (40,225)	$ (47,071)	$ (120,551)	$ (122,268)
Other comprehensive income (loss), net of tax
Unrealized gain (loss) on investments in securities	(73)	(12)	306	106
Foreign currency translation adjustment	4,537	4,587	8,367	682
Comprehensive loss	$ (35,761)	$ (42,496)	$ (111,878)	$ (121,480)