Consolidated Statements of Changes in Stockholders' Equity (Parenthetical) (USD $)	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Cash dividends declared, common share		$ 0.01
(Accumulated Deficit) / Retained Earnings
Cash dividends declared, common share		$ 0.01
Series A and B
Cash dividends declared, per preferred share		$ 0.125
Series A and B | (Accumulated Deficit) / Retained Earnings
Cash dividends declared, per preferred share		$ 0.125
Series D
Cash dividends accrued, per senior preferred share	$ 50	$ 50
Series D | (Accumulated Deficit) / Retained Earnings
Cash dividends accrued, per senior preferred share	$ 50	$ 50
Series E
Cash dividends accrued, per senior preferred share	$ 50	$ 50
Series E | (Accumulated Deficit) / Retained Earnings
Cash dividends accrued, per senior preferred share	$ 50	$ 50