Restructuring and Asset Impairment Charges Employee Separation and Other Cash Charges (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Mar. 31, 2014
Restructuring Reserve [Roll Forward]
Beginning balance	$ 8,087	$ 397	$ 668
Period charges	164	8,618	2,275
Payments	(7,853)	(928)	(2,546)
Ending balance March 31	398	8,087	397
Operating Segments [Member] | North America [Member]
Restructuring Reserve [Roll Forward]
Beginning balance	0	0	8
Period charges	0	0	147
Payments	0	0	(155)
Ending balance March 31	0	0	0
Operating Segments [Member] | Other Regions [Member]
Restructuring Reserve [Roll Forward]
Beginning balance	8,087	397	660
Period charges	164	8,618	2,128
Payments	(7,853)	(928)	(2,391)
Ending balance March 31	$ 398	$ 8,087	$ 397