Stock-Based Compensation And Employee Benefit Plans (Schedule Of Share-Based Compensation Stock Options Activity) (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012
Share-based Arrangements with Employees and Nonemployees [Abstract]
Number of Options Outstanding at beginning of period	1,133
Number of Options granted	0
Number of Options exercised	(331)
Number of Options forfeited	(2)
Number of Options expired	0
Number of Options Outstanding at end of period	800
Number of Options Exercisable at end of period	611
Weighted Average Exercise Price Outstanding at beginning of period	$ 18.01
Weighted Average Exercise Price Options granted	$ 0.00
Weighted Average Exercise Price Options exercised	$ 18.23
Weighted Average Exercise Price Options forfeited	$ 19.02
Weighted Average Exercise Price Options expired	$ 0.00
Weighted Average Exercise Price Outstanding at end of period	$ 17.92
Weighted Average Exercise Price Exercisable at end of period	$ 17.62
Weighted Average Remaining Contractual Term Outstanding at end of period, Years	4 years 15 days
Weighted Average Remaining Contractual Term Exercisable at end of period, Years	3 years 99 days
Aggregate Intrinsic Value Outstanding at end of period	$ 3,020
Aggregate Intrinsic Value Exercisable at end of period	$ 2,477