Business and Basis of Presentation (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2018	Dec. 31, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
General and administrative (less than $1.0 million)	$ (20,485)	$ (20,820)	$ (68,460)	$ (63,229)
Other expense (income), net	$ 218	$ 387	640	$ (119)
Accounting Standards Update 2017-07
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
General and administrative (less than $1.0 million)			1,000
Other expense (income), net			$ 1,000