Stockholders' Equity (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2008 Director	Dec. 31, 2013	Nov. 21, 2008
Class of Stock [Line Items]
Preferred stock, par value (in dollars per share)	$ 0.01		0.01
Common stock, par value (in dollars per share)	$ 0.01		0.01
2035 Debentures [Member]
Class of Stock [Line Items]
Number of quarters during which interest payment has been deferred	11
Cumulative amount of interest in arrears not paid, including interest on unpaid interest	$ 1,350,000
Series A 8.0% Non-Cumulative Convertible Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock, shares issued (in shares)	437,500		437,500
Preferred stock dividend rate percentage (in hundredths)	8.00%
Preferred stock liquidation preference (in dollars per share)	$ 8.00
Number of shares issued upon conversion (in shares)	1
Share conversion price (in dollars per share)	$ 8.00
Stock issuance cost	247,000
Series B Fixed Rate Cumulative Perpetual Preferred Stock [Member]
Class of Stock [Line Items]
Preferred stock, shares issued (in shares)	23,393		23,393	23,393
Preferred stock liquidation preference (in dollars per share)				$ 1,000
Stock issuance cost		45,000
U.S. Treasury sales of shares to outside investors (in shares)	23,393
Preferred stock, par value (in dollars per share)				$ 0.01
Common stock purchase rights with issue of a warrant (in shares)	556,976			556,976
Aggregate purchase price, Preferred Stock and Warrants		23,393,000
Common stock, par value (in dollars per share)				$ 0.01
Compounding dividends percentage for after first five years (in hundredths)		9.00%
Number of directors authorized		2
Amount of preferred dividends in arrears	$ 4,442,000
Term of warrant		10 years
Exercise price of warrants (in dollars per share)		$ 6.30