Commitments And Contingencies (Narrative) (Details) (USD $)	Mar. 31, 2013	Dec. 31, 2012
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Liability estimated after a reasonable margin for statistical fluctuations	$ 3,100,000
Additional payment for CEO remaining employed as of January 1, 2013	100,000
CEO Post Employment Benefits [Member]
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
Accrued expenses and other current liabilities	$ 2,100,000	$ 2,100,000