CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Net earnings (loss)	$ (3,336)	$ 7,140	$ (4,636)	$ 11,116
Other comprehensive income:
Change in foreign currency translation adjustment	759	(65)	1,411	(1,070)
Unrealized gain on interest rate swap	0	91	0	96
Other comprehensive income	759	26	1,411	(974)
Comprehensive income (loss)	$ (2,577)	$ 7,166	$ (3,225)	$ 10,142