CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Statement of Comprehensive Income [Abstract]
Net loss	$ (15,355)	$ (2,169)
Other comprehensive income (loss), net of tax
Unrealized gain on investments in securities	113	27
Foreign currency translation adjustment	(1,672)	1,791
Comprehensive loss	$ (16,914)	$ (351)