Stock Compensation Plans (Details) (USD $) In Thousands, except Share data, unless otherwise specified	9 Months Ended
	Sep. 30, 2013
Options Outstanding, January 1, 2013	312,350
Options,Forfeited or cancelled	14,000
Options, Exercised	33,580
Options, Granted	0
Options Outstanding, September 30, 2013	264,770
Options Outstanding, Vested or expected to vest at September 30, 2013	264,770
Options, Exercisable at September 30, 2013	251,900
Weighted Average Exercise Price, Outstanding, January 1, 2013	$ 20.33
Weighted Average Exercise Price, Forfeited or cancelled	$ 20.66
Weighted Average Exercise Price, Exercised	$ 17.09
Weighted Average Exercise Price, Granted	$ 0
Weighted Average Exercise Price, Outstanding, September 30, 2013	$ 20.73
Weighted Average Exercise Price, Vested or expected to vest at September 30, 2013	$ 20.73
Weighted Average Exercise Price, Exercisable at September 30, 2013	$ 21.30
Weighted Average Remaining Contractual Term (in years), Outstanding, September 30, 2013	3 years 5 months 19 days
Weighted Average Remaining Contractual Term (in years), Vested or expected to vest at September 30, 2013	3 years 5 months 19 days
Weighted Average Remaining Contractual Term (in years), Exercisable at September 30, 2013	3 years 4 months 10 days
Aggregate Intrinsic Value, Outstanding, September 30, 2013	$ 1,177
Aggregate Intrinsic Value, Vested or expected to vest at September 30, 2013	1,177
Aggregate Intrinsic Value, Exercisable at September 30, 2013	$ 999