Condensed Consolidated Statements of Operations and Retained Earnings - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenues [Abstract]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 223,635	$ 157,790	$ 437,099	$ 296,860
Cost of Goods and Services Sold	142,500	101,765	281,901	196,038
Gross Profit	81,135	56,025	155,198	100,822
Operating Expenses [Abstract]
Selling expenses	24,157	18,563	47,639	37,258
General and administrative expenses	23,208	15,554	53,351	33,983
Research and Development Expense	3,825	2,896	7,408	5,665
Amortization of intangibles	6,285	3,192	12,394	6,307
Operating Expenses	57,475	40,205	120,792	83,213
Income from operations	23,660	15,820	34,406	17,609
Other Income & Expenses [Abstract]
Interest and debt expense	4,587	3,018	10,399	6,206
Investment (income) loss	(115)	(357)	(548)	(934)
Foreign currency exchange (gain) loss	441	397	535	481
Other (income) expense, net	(539)	16,911	(289)	19,937
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	19,286	(4,149)	9,506	(8,081)
Income Tax Expense Benefit [Abstract]
Income tax expense (benefit)	4,083	(45)	1,566	(1,008)
Net income (loss)	15,203	(4,104)	7,940	(7,073)
Retained Earnings Accumulated Deficit [Abstract]
Retained earnings - beginning of period		287,472		290,441
Retained earnings - end of period	$ 300,036	$ 281,935	$ 300,036	$ 281,935
Weighted Average Number Of Shares Outstanding Basic [Abstract]
Average basic shares outstanding	28,418	23,883	27,594	23,843
Weighted Average Number Of Shares Outstanding [Abstract]
Average diluted shares outstanding	28,756	23,883	27,957	23,843
Earnings Per Share Basic [Abstract]
Basic income (loss) per share:	$ 0.53	$ (0.17)	$ 0.29	$ (0.30)
Earnings Per Share Diluted [Abstract]
Diluted income (loss) per share:	0.53	(0.17)	0.28	(0.30)
Common Stock, Dividends, Per Share, Declared	$ 0.06	$ 0.06	$ 0.06	$ 0.06
Secured Debt	$ 450,000		$ 450,000
Extinguishment of Debt, Amount	$ 0	$ 0	$ 14,803	$ 0