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General - Schedule of Restructuring Costs (Details) - USD ($) $ in Thousands	6 Months Ended		32 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018
Restructuring Reserve [Roll Forward]
Restructuring charges	$ 295	$ 1,518
Fiscal Year 2016 Restructuring Plan
Restructuring Reserve [Roll Forward]
Beginning balance restructuring reserve	4,728
Restructuring charges	295		$ 55,619
Paid in cash	(474)
Ending balance restructuring reserve	4,549		4,549
Lease Terminations \| Fiscal Year 2016 Restructuring Plan
Restructuring Reserve [Roll Forward]
Beginning balance restructuring reserve	3,645
Restructuring charges	295
Paid in cash	(474)
Ending balance restructuring reserve	3,466		3,466
Other \| Fiscal Year 2016 Restructuring Plan
Restructuring Reserve [Roll Forward]
Beginning balance restructuring reserve	1,083
Restructuring charges	0
Paid in cash	0
Ending balance restructuring reserve	$ 1,083		$ 1,083