CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
Statement of Comprehensive Income [Abstract]
Net loss	$ (23,771)	$ (88,520)	$ (60,608)	$ (91,235)
Other comprehensive income (loss), net of tax
Unrealized gain (loss) on investments in securities	(101)	(213)	160	13
Foreign currency translation adjustment	(549)	198	(2,600)	3,180
Comprehensive loss	$ (24,421)	$ (88,535)	$ (63,048)	$ (88,042)