Stock-Based Compensation (Summary Of Stock-Based Awards) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2014
Restricted Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding, Shares or Units, Beginning balance	194
Vested, Shares or Units	(76)
Forfeited, Shares or Units	(7)
Outstanding, Shares or Units, Ending balance	111
Outstanding, Weighted-Average Grant Date Fair Value, Beginning balance	$ 16.56
Vested, Weighted-Average Grant Date Fair Value	$ 16.87
Forfeited, Weighted-Average Grant Date Fair Value	$ 16.89
Outstanding, Weighted-Average Grant Date Fair Value, Ending balance	$ 16.34
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding, Shares or Units, Beginning balance	303
Granted, Shares or Units	246
Vested, Shares or Units	(95)
Forfeited, Shares or Units	(14)
Outstanding, Shares or Units, Ending balance	440
Outstanding, Weighted-Average Grant Date Fair Value, Beginning balance	$ 17.48
Granted, Weighted-Average Grant Date Fair Value	$ 22.92
Vested, Weighted-Average Grant Date Fair Value	$ 17.57
Forfeited, Weighted-Average Grant Date Fair Value	$ 20.14
Outstanding, Weighted-Average Grant Date Fair Value, Ending balance	$ 20.41
Performance Based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding, Shares or Units, Beginning balance	215
Granted, Shares or Units	88	[1]
Forfeited, Shares or Units	(29)
Outstanding, Shares or Units, Ending balance	274
Outstanding, Weighted-Average Grant Date Fair Value, Beginning balance	$ 16.78
Granted, Weighted-Average Grant Date Fair Value	$ 22.92	[1]
Forfeited, Weighted-Average Grant Date Fair Value	$ 18.52
Outstanding, Weighted-Average Grant Date Fair Value, Ending balance	$ 18.56

[1] (1)Represents target number of units that can vest based on the achievement of the performance goals.