Share Repurchase (Details) (USD $)	3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
Disclosure of Repurchase Agreements [Abstract]
Stock repurchase program, Authorized amount		$ 3,000,000
Repurchase of common stock	186,000
Repurchase of common stock, shares	27,911
Amount available for additional share repurchases	$ 2,800,000