Basis of Accounting and Consolidation 3 (Details) (USD $)	3 Months Ended	12 Months Ended
	Mar. 31, 2015	Dec. 31, 2014
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Net unrealized gains on securities available-for-sale	$ 5,551,000	$ 2,829,000
Held-to-maturity Securities, Unrecognized Holding Loss	(1,181,000)
Unrealized gain (loss) on available-for-sale securities, tax benefit	(1,703,000)	(586,000)
Total unrealized gain (loss) on available for sale securities, net of tax	2,667,000	915,000
Securities with other-than-temporary impairment losses	(1,089,000)	(2,936,000)
Securities with other-than-temporary impairment losses, tax benefit	424,000	1,146,000
Total securities with other-than-temporary impairment losses, net of tax	(665,000)	(1,790,000)
Accumulated other comprehensive income, tax	(1,279,000)	560,000
Total accumulated other comprehensive income, net of tax	2,002,000	(875,000)
Series C Convertible Preferred Stock [Member]
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Liquidation preference 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%
Preferred stock, redemption price per share (in dollars per share)	$ 5,000