Preferred Stock (Details Textual) - USD ($)	1 Months Ended	6 Months Ended
	Sep. 22, 2011	Jun. 30, 2015	Dec. 31, 2014
Preferred Stock [Line Items]
Preferred Stock, Shares Issued		12,562	12,562
Preferred Stock, Liquidation Preference Per Share (in dollars per share)		$ 1,000	$ 1,000
Preferred Stock, Value, Issued		$ 12,562,000	$ 12,562,000
Assets		$ 746,881,000	$ 691,416,000
Second Through Tenth Dividend Periods [Member] | Maximum [Member]
Preferred Stock [Line Items]
Preferred Stock, Dividend Rate, Percentage		5.00%
Second Through Tenth Dividend Periods [Member] | Minimum [Member]
Preferred Stock [Line Items]
Preferred Stock, Dividend Rate, Percentage		1.00%
Eleventh through Nineteenth Dividend Periods [Member] | Maximum [Member]
Preferred Stock [Line Items]
Preferred Stock, Dividend Rate, Percentage		7.00%
Eleventh through Nineteenth Dividend Periods [Member] | Minimum [Member]
Preferred Stock [Line Items]
Preferred Stock, Dividend Rate, Percentage		1.00%
Series AA Preferred Stock Remains Outstanding for More than Four and One Half Years [Member]
Preferred Stock [Line Items]
Preferred Stock, Dividend Rate, Percentage		9.00%
Small Business Lending Fund Program [Member]
Preferred Stock [Line Items]
Funds Raised from Small Business Act	$ 30,000,000,000
Assets	$ 10,000,000,000
Qualified Small Business Lending [Member]
Preferred Stock [Line Items]
Preferred Stock, Aggregate Liquidation Amount, Dividend Rate, Percentage	5.00%	1.00%
Senior Non Cumulative Perpetual Preferred Stock Series AA [Member]
Preferred Stock [Line Items]
Preferred Stock, Shares Issued	12,562
Preferred Stock, Liquidation Preference Per Share (in dollars per share)	$ 1,000
Preferred Stock, Value, Issued	$ 12,562,000