Summary of Significant Accounting Policies Summary of Significant Accounting Policies 2 (Details)	12 Months Ended
	Dec. 31, 2015 USD ($) director dividend_period $ / shares	Dec. 31, 2014 USD ($)	Dec. 31, 2013 $ / shares	Jun. 28, 2012 USD ($)	May. 13, 2011 USD ($)	Mar. 02, 2011 USD ($) investors	Feb. 11, 2011 USD ($) $ / shares
Series C Convertible Preferred Stock [Abstract]
Preferred Stock issued during period, value	$ 27,400,000	$ 27,400,000
Series C Convertible Preferred Stock [Member]
Series B Convertible Preferred Stock [Abstract]
Preferred stock issue price (in dollars per share) | $ / shares							$ 5,000
Number of dividend periods | dividend_period	4
Number of Directors to be Elected by Holders of Preferred Stock | director	2
Liquidation preference per share (in dollars per share)	$ 5,000
Preferred stock, conversion price per share (in dollars per share) | $ / shares	$ 20.29
Preferred stock, redemption price per share (in dollars per share) | $ / shares	$ 5,000
Proceeds from Issuance of Convertible Preferred Stock	$ 27,500,000
Preferred Stock, Dividend Rate, Percentage (in hundredths)	8.00%
Series C Convertible Preferred Stock [Abstract]
Preferred Stock, shares subscribed, value							$ 27,500,000
Number of Investors Completing the Required Bank Regulatory Process					4	3
Preferred Stock issued during period, value				$ 8,250,000	$ 5,490,000	$ 2,750,000	$ 11,010,000
Percentage of common stock tangible book value required for the conversion of common stock (in hundredths)	115.00%
Tangible book value per share of common stock (in dollars per share) | $ / shares	$ 15.09		$ 9.38
115% of common stock tangible book value (in dollars per share) | $ / shares			$ 10.79
Percentage of the NASDAQ Bank Index required for the conversion of Series C Preferred Stock (in hundredths)	115.00%
NASDAQ Bank Index	2,853.15		1,847.35
115% of NASDAQ Bank Index			2,124.45
Proceeds from Issuance of Convertible Preferred Stock	$ 27,500,000
Preferred Stock, Dividend Rate, Percentage (in hundredths)	8.00%