Restructuring Costs Restructuring costs (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended					9 Months Ended
	Dec. 31, 2015		Jun. 30, 2015	Dec. 31, 2014	[1]	Dec. 31, 2015		Dec. 31, 2014	[1]
Restructuring Costs [Line Items]
Restructuring and impairment costs	$ 0	[1]	$ 2,400	$ 1,143		$ 2,389	[1]	$ 4,493
Restructuring liability	$ 1,100					$ 1,100

[1] Restructuring and impairment costs are excluded from segment operating income, but are included in consolidated operating income in the consolidated statements of income and comprehensive income.