Stockholders' Equity (Details Textual) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended				3 Months Ended	1 Months Ended
	Mar. 31, 2013	Dec. 31, 2012	Jun. 14, 2012 Maximum [Member]	Jun. 14, 2012 Minimum [Member]	Mar. 31, 2013 Common Stock [Member]	Apr. 30, 2013 Subsequent Event [Member]
Business Acquisition, Equity Interests Issued or Issuable [Line Items]
Common stock, shares authorized	37,000,000	37,000,000	100,000,000	37,000,000
Preferred stock, shares authorized	3,000,000	3,000,000	5,000,000	3,000,000
Repurchase of common stock	$ 3.5				$ 10.0
Cash dividend on common stock per share						$ 0.03
Stockholders Equity (Textual) [Abstract]
Payment Date	Jun. 05, 2013
Record Date	May 22, 2013
Dividends payment	$ 0.5