Stockholders' Equity (Details) (USD $)	1 Months Ended	12 Months Ended				0 Months Ended	12 Months Ended			12 Months Ended			0 Months Ended				0 Months Ended		12 Months Ended		0 Months Ended			12 Months Ended
	May 31, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Oct. 05, 2012 Reverse Stock Split	Dec. 19, 2008 Fixed Rate Cumulative Perpetual Preferred Stock, Series A	Dec. 31, 2012 Fixed Rate Cumulative Perpetual Preferred Stock, Series A	Dec. 31, 2011 Fixed Rate Cumulative Perpetual Preferred Stock, Series A	Oct. 05, 2012 Unexercised warrants Reverse Stock Split	Dec. 31, 2012 Mandatorily Convertible Cumulative Participating Preferred Stock, Series B Board_Members quarterly_periods	Dec. 31, 2012 Voting common stock	Dec. 31, 2011 Voting common stock	Oct. 05, 2012 Voting common stock Reverse Stock Split	Oct. 04, 2012 Voting common stock Reverse Stock Split	Dec. 31, 2012 Non-voting common stock	Dec. 31, 2011 Non-voting common stock	Oct. 05, 2012 Non-voting common stock Reverse Stock Split	Oct. 04, 2012 Non-voting common stock Reverse Stock Split	Dec. 31, 2012 First Five Years Fixed Rate Cumulative Perpetual Preferred Stock, Series A	Dec. 31, 2012 Thereafter Fixed Rate Cumulative Perpetual Preferred Stock, Series A	Dec. 19, 2008 December 2008 Capital Raise	Dec. 19, 2008 December 2008 Capital Raise Unexercised warrants	Oct. 05, 2012 December 2008 Capital Raise Unexercised warrants Reverse Stock Split	Dec. 31, 2012 January 2012 Capital Raise shareholders	Oct. 05, 2012 January 2012 Capital Raise Reverse Stock Split
Class of Stock [Line Items]
Common stock, shares outstanding											2,603,132	840,984	2,600,000	26,000,000	3,839,688	0	3,800,000	38,400,000
Common stock, shares authorized											30,000,000	30,000,000	30,000,000	300,000,000	10,000,000	10,000,000	10,000,000	100,000,000
Stock issued						27,000							525,000				345,000
Liquidation preference per share						$ 1,000	$ 1,000	$ 1,000		$ 0.01
Length of warrant																					10 years
Number of securities called by warrants		1,700,000			170,000																	653,226	65,323	1,700,000	170,000
Proceeds from issuance of preferred stock and preference stock						$ 27,000,000
Exercise price of warrants or rights (dollar per share)									62.00																10
Preferred stock, dividend rate																			5.00%	9.00%
Number of years for five percent dividends							5 years
Restriction period of common stock repurchase program							3 years
Preferred stock, shares authorized		1,000,000	1,000,000							864,600
Preferred stock, shares outstanding							27,000	27,000		698,993
Converible perferred stock, shares issued upon conversion										50
Conversion price per share										$ 1.00
Reverse Stock split					0.1
Proceeds from issuance of common stock	8,700,000	22,532,000	0	0
Number of shareholders participating in warrant offering																								2
Maximum number of periods for dividend deferral trigger										6
Number of board members allocated for non payment of dividends										2
Deferred interest and dividend payment, per quarter		$ 477,000