Regulatory Matters (Details Textual) (USD $)	0 Months Ended	1 Months Ended	3 Months Ended				6 Months Ended
	Jul. 11, 2013	May 19, 2010	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2009
Regulatory Matters (Textual) [Abstract]
Trust preferred securities			$ 32,000,000		$ 32,000,000		$ 32,000,000
Aggregate amount of restricted core elements allowed in Tier 1 capital							25.00%
Trusted preferred securities issued date		before May 19, 2010
Maximum level of consolidated aggregate assets allowing for inclusion of trust preferred securities in Tier Capital under Dodd-Frank Act									$ 15,000,000,000
Cash dividend on common stock	$ 0.12		$ 0.11	$ 0.10	$ 0.09	$ 0.00	$ 0.21	$ 0.00
Dividend suspended date							Apr. 01, 2010
Installment One FY Two Thousand Thirteen [Member]
Regulatory Matters (Textual) [Abstract]
Dividend declared date							Oct. 11, 2012
Dividend payable date							Dec. 10, 2012
Dividend payable date of record							Nov. 09, 2012
Installment Two FY Two Thousand Thirteen [Member]
Regulatory Matters (Textual) [Abstract]
Dividend declared date							Jan. 10, 2013
Dividend payable date							Mar. 08, 2013
Dividend payable date of record							Feb. 08, 2013
Installment Three FY Two Thousand Thirteen [Member]
Regulatory Matters (Textual) [Abstract]
Dividend declared date							Apr. 11, 2013
Dividend payable date							Jun. 10, 2013
Dividend payable date of record							May 10, 2013
Installment Four FY Two Thousand Thirteen [Member]
Regulatory Matters (Textual) [Abstract]
Dividend declared date							Jul. 11, 2013
Dividend payable date							Sep. 10, 2013
Dividend payable date of record							Aug. 09, 2013