General - Schedule of Restructuring Costs (Details) - USD ($) $ in Thousands	11 Months Ended	12 Months Ended				50 Months Ended
	Mar. 31, 2016	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2020
Restructuring Reserve [Roll Forward]
Restructuring charges		$ 0	$ 295	$ 1,667
Fiscal Year 2016 Restructuring Plan
Restructuring Reserve [Roll Forward]
Beginning balance restructuring reserve		2,586	4,728	11,080
Restructuring charges	$ 24,673		295	1,667	$ 28,984	$ 55,619
Paid in cash		(973)	(2,437)	(8,019)
Ending balance restructuring reserve		1,613	2,586	4,728	11,080	1,613
Lease Termination | Fiscal Year 2016 Restructuring Plan
Restructuring Reserve [Roll Forward]
Beginning balance restructuring reserve		2,084	3,645	4,572
Restructuring charges			295	149
Paid in cash		(656)	(1,856)	(1,076)
Ending balance restructuring reserve		1,428	2,084	3,645	4,572	1,428
Severance Costs | Fiscal Year 2016 Restructuring Plan
Restructuring Reserve [Roll Forward]
Beginning balance restructuring reserve		0	0	2,555
Restructuring charges			0	0
Paid in cash		0	0	(2,555)
Ending balance restructuring reserve		0	0	0	2,555	0
Other | Fiscal Year 2016 Restructuring Plan
Restructuring Reserve [Roll Forward]
Beginning balance restructuring reserve		502	1,083	3,953
Restructuring charges			0	1,518
Paid in cash		(317)	(581)	(4,388)
Ending balance restructuring reserve		$ 185	$ 502	$ 1,083	$ 3,953	$ 185