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Stock-Based Compensation (Stock-Based Compensation Expense And Related Income Tax Benefit Recognized) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pre-tax compensation expense	$ 103	$ 144	$ 289	$ 404
Tax benefit	42	60	117	167
Stock expense, net of tax	61	84	172	237
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Pre-tax compensation expense	1,038	586	3,085	1,473
Tax benefit	420	241	1,249	607
Stock expense, net of tax	$ 618	$ 345	$ 1,836	$ 866

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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