Stockholders' Equity (Details Textual) (USD $)	1 Months Ended	9 Months Ended									1 Months Ended
	Oct. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Sep. 30, 2012 Maximum [Member]	Sep. 30, 2012 Minimum [Member]	Nov. 30, 2011 Common Stock [Member]
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Repurchase of common stock											$ 10,000,000
Preferred stock, shares authorized		3,000,000			3,000,000				5,000,000	3,000,000
Common stock, shares authorized		37,000,000			37,000,000				100,000,000	37,000,000
Stockholders Equity (Textual) [Abstract]
Common stock remaining under the repurchase program		3,600,000
Cash dividend on common stock per share	$ 0.025
Payment Date		Dec. 04, 2012
Record Date		Nov. 20, 2012
Dividend Payment	$ 400,000	$ 380,000	$ 379,000	$ 381,000		$ 310,000	$ 310,000	$ 309,000