Stock-Based Compensation (Schedule of Non-Qualified Stock Options Activity) (Details) (Non Qualified Options, USD $)	9 Months Ended
	Sep. 30, 2012
Non Qualified Options
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Outstanding at beginning of year	112,800
Granted	0
Exercised	(11,300)
Cancelled	0
Outstanding at September 30, 2012	101,500
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Granted, Exercise Price, in dollars per share	$ 0.00	[1]
Exercised, Exercise Price, in dollars per share	$ 9.04	[1]
Cancelled, Exercise Price, in dollars per share	$ 0.00	[1]
Outstanding at September 30, 2012, Exercise Price, in dollars per share	$ 19.17	[1]
Exercisable at September 30, 2012	49,900
Exercisable at September 30, 2012, Exercise Price, in dollars per share	$ 19.94	[1]
Available for grant at September 30, 2012	322,750

[1] Weighted Averages