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, unless otherwise specified	Mar. 31, 2013	Mar. 31, 2012
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets, Carrying Value	$ 5,225	$ 12,061
Assets, Non-Recurring Losses/(Gains)		865
Liabilities, Carrying Value		32
Liabilities, Non-Recurring Losses/(Gains)		(156)
Vacant Leased Facilities [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Liabilities, Carrying Value		32
Liabilities, Non-Recurring Losses/(Gains)		(156)
Vacant Owned Facilities [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets, Carrying Value	5,225	10,324
Assets, Non-Recurring Losses/(Gains)		265
Other Indentifiable Intangible Assets [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets, Carrying Value		642
Assets, Non-Recurring Losses/(Gains)		600
Net Assets Of Acquired Businesses [Member]
Fair Value Measurements, Recurring and Nonrecurring, Valuation Techniques [Line Items]
Assets, Carrying Value		$ 1,095