CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME (LOSS) (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
Net sales	$ 112,932	$ 133,231	$ 266,443	$ 310,259
Cost of sales	82,945	99,768	199,631	240,468
Gross profit	29,987	33,463	66,812	69,791
Selling, general and administrative expenses	21,654	28,718	65,140	85,995
Restructuring expenses	604	1,050	3,399	3,177
Impairment of goodwill	0	0	0	1,390
Operating income (loss)	7,729	3,695	(1,727)	(20,771)
Interest expense (income), net	798	784	2,447	1,480
Other expense (income), net	(649)	(154)	(1,725)	(437)
Income (loss) before income taxes	7,580	3,065	(2,449)	(21,814)
Income tax expense	339	9,835	1,076	8,342
Net income (loss)	$ 7,241	$ (6,770)	$ (3,525)	$ (30,156)
Net income (loss) per common share, basic (in dollars per share)	$ 0.82	$ (0.77)	$ (0.40)	$ (3.35)
Net income (loss) per common share, diluted (in dollars per share)	$ 0.81	$ (0.77)	$ (0.40)	$ (3.35)
Weighted average basic shares outstanding (in shares)	8,880	8,845	8,865	9,007
Weighted average diluted shares outstanding (in shares)	8,902	8,845	8,865	9,007
Net income (loss)	$ 7,241	$ (6,770)	$ (3,525)	$ (30,156)
Currency translation adjustments:
Currency translation adjustments	449	(183)	(70)	(1,149)
Total currency translation gain (loss)	449	(183)	(70)	(1,149)
Pension and postretirement benefits:
Net income arising from pension and postretirement benefits, net of tax $9 for the three- and nine months ended December 31, 2019	28	0	28	0
Interest rate swap agreement:
Fair value adjustment, net of tax $(185) for the three months, and $(87) for the nine months ended December 31, 2018	0	(585)	0	(109)
Other comprehensive income (loss), net:	477	(768)	(42)	(1,258)
Comprehensive income (loss)	$ 7,718	$ (7,538)	$ (3,567)	$ (31,414)