Stock Options (Schedule of Restricted Stock Award Activity) (Details) (Restricted Stock, USD $)	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Outstanding at beginning of year, Shares	19,750		9,000		8,000
Granted, Shares	0		13,500		3,000
Vested, Shares	(6,125)		(2,750)		(2,000)
Forfeited or Cancelled, Shares	(2,250)		0		0
Outstanding at end of year, Shares	11,375		19,750		9,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Intrinsic Value [Roll Forward]
Outstanding at beginning of year, Price	$ 22.96	[1]	$ 15.86	[1]	$ 11.45	[1]
Granted, Price	$ 0.00	[1]	$ 26.08	[1]	$ 24.69	[1]
Vested, Price	$ 21.13	[1]	$ 15.06	[1]	$ 11.45	[1]
Forfeited or Cancelled, Price	$ 21.45	[1]	$ 0.00	[1]	$ 0.00	[1]
Outstanding at end of year, Price	$ 24.24	[1]	$ 22.96	[1]	$ 15.86	[1]

[1] Weighted Averages