Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
	Jun. 30, 2021	Jun. 30, 2020
Statement of Comprehensive Income [Abstract]
Net loss	$ (11,341)	$ (17,420)
Other comprehensive income (loss):
Cumulative translation adjustments	19	953
Changes in market value of investments:
Changes in unrealized losses, net of tax benefit of ($1), and ($23), respectively	(5)	(74)
Total net change in market value of investments	(5)	(74)
Changes in market value of derivatives:
Changes in market value of derivatives, net of taxes of $40, and $3, respectively	129	8
Reclassification adjustment for net (losses) gains included in net loss, net of (benefit) taxes of ($25), and $10, respectively	(80)	32
Total net change in market value of derivatives	49	40
Other comprehensive income	63	919
Total comprehensive loss	$ (11,278)	$ (16,501)