Basis of Accounting and Consolidation Basis of Accounting and Consolidation 2 (Details) (USD $)	3 Months Ended		12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Dec. 31, 2009	Jun. 28, 2012	May 13, 2011	Mar. 02, 2011 investors	Feb. 11, 2011	Dec. 31, 2010
Series C Convertible Preferred Stock [Abstract]
Preferred Stock issued during period, value	$ 27,400,000	27,400,000
Series B Convertible Preferred Stock [Member]
Series B Convertible Preferred Stock [Abstract]
Preferred stock issue price (in dollars per share)			$ 5,000
Preferred stock, revised conversion price per share (in dollars per share)	$ 21.62
Preferred Stock, Shares Outstanding	4,926
Proceeds from Issuance of Convertible Preferred Stock			24,635,000
Preferred Stock, Dividend Rate, Percentage (in hundredths)			9.00%
Convertible Preferred Stock, Shares Issued upon Conversion	231.267
Conversion of Stock, Shares Issued		1,139,195
Series C Convertible Preferred Stock [Abstract]
Proceeds from Issuance of Convertible Preferred Stock			24,635,000
Preferred Stock, Dividend Rate, Percentage (in hundredths)			9.00%
Series C Convertible Preferred Stock [Member]
Series B Convertible Preferred Stock [Abstract]
Preferred stock issue price (in dollars per share)							$ 5,000
Liquidation preference per share (in dollars per share)	5,000
Preferred stock, conversion price per share (in dollars per share)	$ 20.29
Preferred stock, redemption price per share (in dollars per share)	$ 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)	$ 16.56							$ 9.38
Number of dividend periods	4
Number of Directors to be Elected by Holders of Preferred Stock	2
Percentage of the NASDAQ Bank Index required for the conversion of Series C Preferred Stock (in hundredths)	115.00%
115% of common stock tangible book value (in dollars per share)								$ 10.79
NASDAQ Bank Index	2,679.98							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%