Fair Value Measurements (Schedule Of Nonfinancial Assets And Liabilities Are Measured At Fair Value On A Nonrecurring Basis Upon Impairment) (Details) (Discontinued Operations [Member], USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value Prior to Impairment	$ 6,642
Pre-Tax Non-Cash Impairment	5,242
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying Value Prior to Impairment	$ 1,400