Common Stock (Details Textual) (USD $)	1 Months Ended	9 Months Ended
	Mar. 31, 2009	Sep. 30, 2012	Dec. 31, 2008
Common Stock (Textual) [Abstract]
Common stock authorized by the Board of Directors			2,250,000
Repurchase of common stock	1,200,000
Maximum percentage of repurchase of common stock	10.00%
Bank credit agreement to permit share repurchases of common stock	$ 15,000,000
Total purchased shares	859,499
Additional estimated shares		340,501