Stock-Based Compensation (Narrative) (Details) (USD $)	3 Months Ended		9 Months Ended			3 Months Ended	9 Months Ended		1 Months Ended		1 Months Ended
	Sep. 30, 2013 Stock Options	Sep. 30, 2012 Stock Options	Sep. 30, 2013 Stock Options	Sep. 30, 2012 Stock Options	Sep. 30, 2013 Non-Qualified Options	Sep. 30, 2012 Restricted Stock Awards And Restricted Stock Units	Sep. 30, 2013 Restricted Stock Awards And Restricted Stock Units	Sep. 30, 2012 Restricted Stock Awards And Restricted Stock Units	Sep. 30, 2013 2007 Stock Incentive Plan Stock Options	Sep. 30, 2012 2007 Stock Incentive Plan Stock Options	Sep. 30, 2013 Second Restated 2007 Stock Incentive Plan Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Outstanding options exchanged for new option awards									182,000		29,000
Exercise price per share for options granted										$ 13.50	$ 11.87
Number of options granted	53,998	3,000	167,498	72,740	50,000	2,800	35,000	66,924