Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Income Statement [Abstract]
Net sales	$ 147,258	$ 189,259	$ 469,810	$ 458,838
Cost of sales	117,342	111,388	342,336	265,633
Gross profit	29,916	77,871	127,474	193,205
Operating expenses:
Selling and marketing	32,395	21,998	75,634	53,651
General and administrative	11,456	10,364	39,355	28,520
Research and development	5,379	4,029	15,882	11,997
Loss on disposal group	0	0	0	20,668
Total operating expenses	49,230	36,391	130,871	114,836
Operating (loss) income	(19,314)	41,480	(3,397)	78,369
Other expense:
Interest income	1	7	34	9
Interest expense	(354)	(280)	(1,149)	(871)
Other, net	(789)	(3,367)	(815)	(3,628)
Total other expense, net	(1,142)	(3,640)	(1,930)	(4,490)
(Loss) income from continuing operations before income taxes	(20,456)	37,840	(5,327)	73,879
Income tax expense (benefit)	(7,001)	8,588	(1,321)	15,644
(Loss) income from continuing operations	(13,455)	29,252	(4,006)	58,235
Discontinued operations:
Loss from discontinued operations before income taxes	(118)	(65)	(195)	(128)
Income tax (benefit) expense of discontinued operations	(74)	251	16	443
Loss from discontinued operations	(44)	(316)	(211)	(571)
Net (loss) income	$ (13,499)	$ 28,936	$ (4,217)	$ 57,664
Earnings Per Share, Basic [Abstract]
Basic income (loss) per share from continuing operations (in dollars per share)	$ (0.43)	$ 0.97	$ (0.13)	$ 1.94
Basic loss per share from discontinued operation (in dollars per share)	0	(0.01)	(0.01)	(0.02)
Basic net income (loss) per share (in dollars per share)	(0.43)	0.96	(0.14)	1.92
Earnings Per Share, Diluted [Abstract]
Diluted income (loss) per share from continuing operations (in dollars per share)	(0.43)	0.90	(0.13)	1.80
Diluted loss per share from discontinued operation (in dollars per share)	0	(0.01)	(0.01)	(0.02)
Diluted net income (loss) per share (in dollars per share)	$ (0.43)	$ 0.89	$ (0.14)	$ 1.78
Shares used in per share calculations:
Basic (in shares)	31,199	30,284	30,955	30,077
Diluted (in shares)	31,199	32,633	30,955	32,336