Stock Options (Details) (USD $)	6 Months Ended
	Jun. 30, 2012
Summary of stock options outstanding
Exercise Price	$ 15.06
Weighted Average Remaining Life (Years)	1 year 3 months 29 days
Outstanding options	31,212
Stock Option One [Member]
Summary of stock options outstanding
Exercise Price	$ 11.85
Weighted Average Remaining Life (Years)	2 months 1 day
Outstanding options	10,404
Stock Option Two [Member]
Summary of stock options outstanding
Exercise Price	$ 16.67
Weighted Average Remaining Life (Years)	1 year 11 months 1 day
Outstanding options	20,808