Stock Compensation and Share Repurchase Plan (Summary Of Outstanding Stock Options Issued Under All Plans) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding	807	981	1,850	2,151
Weighted Avg Remaining Contractual Life	3 years 8 months
Options Outstanding, Weighted Avg. Exercise Price	$ 16.80	$ 16.17	$ 15.37	$ 14.48
Options Exercisable	676	627	1,263
Options Exercisable, Weighted Avg. Exercise Price	$ 17.71	$ 18.86	$ 17.11
$4.58 to $11.89
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Range of Exercise Prices, minimum	$ 4.58
Options Outstanding, Range of Exercise Prices, maximum	$ 11.89
Options Outstanding	258
Weighted Avg Remaining Contractual Life	5 years 30 days
Options Outstanding, Weighted Avg. Exercise Price	$ 10.96
Options Exercisable	223
Options Exercisable, Weighted Avg. Exercise Price	$ 10.81
$11.98 to $15.50
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Range of Exercise Prices, minimum	$ 11.98
Options Outstanding, Range of Exercise Prices, maximum	$ 15.50
Options Outstanding	240
Weighted Avg Remaining Contractual Life	6 years 4 months 3 days
Options Outstanding, Weighted Avg. Exercise Price	$ 13.23
Options Exercisable	144
Options Exercisable, Weighted Avg. Exercise Price	$ 13.90
$21.22 to $24.71
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Range of Exercise Prices, minimum	$ 21.22
Options Outstanding, Range of Exercise Prices, maximum	$ 24.71
Options Outstanding	234
Weighted Avg Remaining Contractual Life	1 month 3 days
Options Outstanding, Weighted Avg. Exercise Price	$ 23.67
Options Exercisable	234
Options Exercisable, Weighted Avg. Exercise Price	$ 23.67
$26.12 to $28.43
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Options Outstanding, Range of Exercise Prices, minimum	$ 26.12
Options Outstanding, Range of Exercise Prices, maximum	$ 28.43
Options Outstanding	75
Weighted Avg Remaining Contractual Life	1 year 10 months
Options Outstanding, Weighted Avg. Exercise Price	$ 26.89
Options Exercisable	75
Options Exercisable, Weighted Avg. Exercise Price	$ 26.89