Special Charges and Other, Net (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Other Nonrecurring (Income) Expense [Abstract]
Employee separation costs	$ 90	$ 6,525	$ 1,477	$ 35,346
Gain on sale of assets	0	0	(4,447)	0
Impairment charges	99	8,084	199	10,045
Contract exit costs	(97)	4,954	20,057	5,294
Other	104	1,381	26	1,837
Special charges and other, net	$ 196	$ 20,944	$ 17,312	$ 52,522