Fair Value Measurements (Schedule Of Non-Recurring Losses Recognized Using Fair Value Measurements And The Carrying Value Of Any Assets And Liabilities Measured Using Fair Value Estimates) (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Mar. 31, 2015
Assets
Assets, carrying value	$ 18,134	$ 6,589
Assets, non-recurring losses (gains)	0	0
Vacant Owned Facilities
Assets
Assets, carrying value	2,527	3,866
Assets, non-recurring losses (gains)	0	0
Net Assets Of Acquired Businesses
Assets
Assets, carrying value	15,607	2,723
Assets, non-recurring losses (gains)	$ 0	$ 0