Stock-Based And Long-Term Compensation (Summary Of Non-Vested Stock Option Activity) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012
Summarizes Non-vested Stock Option [Abstract]
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsStockOptionsIssuedInConnectionWithAcquisitionInPeriod	$ 177,867
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsStockOptionsIssuedInConnectionWtihAcquisitionInPeriodWeightedAverageGrantDateFairValue	$ 12.41
ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsStockOptionsForfeituresInPeriodWeightedAverageGrantDateFairValue	$ 10.77
Share based compensation arrangement by share based payment award equity instruments stock options forfeitures in period	(145,997)
Number of Option, Beginning Balance	683,456
Number of Option, Granted	78,043
Number of Option, Vested	(384,180)
Number of Option, Ending Balance	409,189
Weighted Average Grant Date Fair Value, Beginning Balance	$ 11.59
Weighted Average Grant Date Fair Value, Granted	$ 13.19
Weighted Average Grant Date Fair Value, Vested	$ 11.51
Weighted Average Grant Date Fair Value, Ending Balance	$ 12.71