Stock Based Compensation (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 Restricted stock [Member]	Dec. 31, 2011 Restricted stock [Member]	Dec. 31, 2010 Restricted stock [Member]	Dec. 31, 2012 Stock Option [Member]	Dec. 31, 2011 Stock Option [Member]	Dec. 31, 2010 Stock Option [Member]	May 10, 2010 Common Class A [Member] Convert For Class B [Member]	May 10, 2010 Common Class A [Member] Stock Option [Member]	May 10, 2010 Common Class A [Member] Incentive Compensation Plan [Member]	May 10, 2010 Common Class B [Member] Stock Option [Member]
Stock Based Compensation (Textual) [Abstract]
Stock-Based Compensation expense				$ 110,000	$ 187,000	$ 360,000	$ 22,000	$ 196,000	$ 567,000
Recognized tax benefits				45,000	77,000	147,000	9,000	80,000	231,000
Number of shares of common stock authorized										500,000	500,000	1,500,000	500,000
Stock options grant term	10 years
Stock options exercise price description	May not be exercised at a price which is less than 100% of the fair market value of shares at the date of grant.
Intrinsic value of stock options exercised	72,200
The weighted average grant date fair value of restricted stock that vested during	159,000	333,000	506,000
Proceeds from stock options exercised	287,600
Net value of unrecognized compensation cost related to unvested restricted stock awards	$ 16,000	$ 127,000	$ 329,000