Income Taxes (Schedule Of Combined Income Tax Expense (Benefit) Allocable To Continuing Operations, Other Comprehensive Income, And Adjustments To Shareholders' Equity) (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2016
Income Tax Disclosure [Abstract]
Continuing operations	$ 50,509	$ 56,732	$ 54,430
Other comprehensive income	23,471	1,503	1,423
Direct adjustments to shareholders' equity	0	0	(805)
Total	$ 73,980	$ 58,235	$ 55,048