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Income Taxes 1 of 2 (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Income Tax Disclosure [Abstract]
Expected tax at statutory rate	$ 2,116	$ 16,203	$ 11,108
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount	$ 0	$ 0	$ (1,500)
Expected tax rate (percentage)	21.00%	21.00%	21.00%
State income taxes net of federal benefit	$ (450)	$ 1,397	$ 1,728
Foreign taxes at rates other than statutory federal rate	287	1,102	(145)
Effective Income Tax Rate Reconciliation, Disposition of Business, Amount	0	0	4,041
Permanent items (6), (7)	178	266	(1,694)
Valuation allowance (2), (4)	84	(1,184)	13,190
Foreign tax credits (2)	0	0	(15,371)
Federal tax credits (5)	700	800	(1,376)
Other (8)	(545)	1,603	340
Income tax expense	970	17,484	10,321
Current income tax expense (benefit):
United States Federal	810	(2,491)	(1,663)
State taxes	618	626	394
Foreign	8,246	11,984	12,548
Deferred income tax expense (benefit):
United States	(5,996)	7,827	5,873
Foreign	(2,708)	(462)	(6,831)
Income tax expense	970	17,484	$ 10,321
Effective Income Tax Rate Reconciliation, Tax Credit, Amount	$ (700)	$ (1,903)

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