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Restructuring (Details) - USD ($) $ in Thousands	12 Months Ended
Restructuring (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019	Jul. 31, 2018
Restructuring related charges:
Restructuring costs incurred	$ 11,400
Restructuring reserve
Charges, net	(54)	$ 144	$ 11,302
Continuing Operations
Restructuring reserve
Balance at the beginning of the period	681	4,389	0
Charges, net	(54)	144	11,302
Cash payments		(3,852)	(6,913)
Balance at the end of the period	627	681	4,389
Continuing Operations \| Termination Benefits
Restructuring reserve
Balance at the beginning of the period	681	4,389	0
Charges, net	(54)	144	11,302
Cash payments		(3,852)	(6,913)
Balance at the end of the period	627	681	4,389
Continuing Operations \| Lease Exit Costs
Restructuring reserve
Balance at the beginning of the period	0	0	0
Charges, net	0	0	0
Cash payments		0	0
Balance at the end of the period	$ 0	$ 0	$ 0
Minimum \| Termination Benefits
Restructuring related charges:
Approved cost of restructuring				$ 10,000
Maximum \| Termination Benefits
Restructuring related charges:
Approved cost of restructuring				$ 15,000