Stock Compensation Plans (Details) (USD $) In Thousands, except Share data, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
Options - Outstanding (in shares)	86,250
Options - Granted (in shares)	0
Options - Exercised (in shares)	(1,500)
Options - Forfeited (in shares)	(5,500)
Options - Outstanding (in shares)	79,250	86,250
Options - Exercisable (in shares)	76,500
Weighted-Average Exercise Price - Outstanding (in dollars per share)	$ 24.79
Weighted-Average Exercise Price - Granted (in dollars per share)	$ 0
Weighted-Average Exercise Price - Exercised (in dollars per share)	$ 13.50
Weighted-Average Exercise Price - Forfeited (in dollars per share)	$ 25.28
Weighted-Average Exercise Price - Outstanding (in dollars per share)	$ 24.97	$ 24.79
Weighted-Average Exercise Price - Exercisable (in dollars per share)	$ 25.27
Aggregate Intrinsic Value - Outstanding	$ 0
Aggregate Intrinsic Value - Granted	$ 0
Aggregate Intrinsic Value - Exercised	0
Aggregate Intrinsic Value - Forfeited	$ 0
Aggregate Intrinsic Value - Outstanding	65,295	0
Aggregate Intrinsic Value - Exercisable	$ 43,150
Weighted-Average Remaining Term - Outstanding (in years)	4 years 3 months 18 days	4 years 10 months 24 days
Weighted-Average Remaining Term - Granted (in years)	0 years
Weighted-Average Remaining Term - Exercised (in years)	0 years
Weighted-Average Remaining Term - Forfeited (in years)	0 years
Weighted-Average Remaining Term - Exercisable (in years)	4 years 2 months 12 days