CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Income Statement [Abstract]
Net sales	$ 57,537	$ 64,127
Cost of sales	45,431	52,480
Gross profit	12,106	11,647
Selling, general and administrative expenses	23,047	28,929
Restructuring expenses	2,054	0
Impairment of goodwill	0	1,390
Operating income (loss)	(12,995)	(18,672)
Interest expense (income), net	928	262
Other expense (income), net	(87)	(117)
Income (loss) before income taxes	(13,836)	(18,817)
Income tax expense (benefit)	412	(341)
Net income (loss)	$ (14,248)	$ (18,476)
Basic and diluted net income (loss) per common share (in dollars per share)	$ (1.61)	$ (2.03)
Weighted average basic and diluted shares outstanding (in shares)	8,840	9,120
Net income (loss)	$ (14,248)	$ (18,476)
Currency translation adjustments:
Currency translation adjustments	(215)	(720)
Total currency translation gain (loss)	(215)	(720)
Interest rate swap agreement:
Fair value adjustment, net of tax $59 in 2018	0	265
Total effects of interest rate swap agreement	0	265
Other comprehensive income (loss), net:	(215)	(455)
Comprehensive income (loss)	$ (14,463)	$ (18,931)