Note 12 - Material Transactions Affecting Stockholders' Equity (Detail) (USD $)	0 Months Ended	3 Months Ended	12 Months Ended
	Jan. 13, 2010	Dec. 31, 2011	Dec. 31, 2011		Dec. 31, 2010		Dec. 31, 2009		Mar. 31, 2010	Dec. 31, 2008	Jan. 30, 2010
Proceeds from Issuance of Preferred Stock and Preference Stock										$ 193,000,000
Preferred Stock, Shares Issued (in Shares)		0	0		193,000					193,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in Shares)										1,305,230
Accretion Expense			(2,118,000)	[1]	(649,000)	[1]	(615,000)	[1]
Dividends, Preferred Stock, Cash			8,658,000		9,650,000		9,650,000
Preferred Stock, Redemption Amount		900,000,000	900,000,000
Stock Issued During Period, Shares, New Issues (in Shares)	18,818,183
Sale of Stock, Price Per Share (in Dollars per share)	$ 11.00
Proceeds from Issuance of Common Stock	196,000,000				196,035,000
Stock Issued During Period, Net Proceeds Per Share (in Dollars per share)	$ 10.45
Common Stock, Shares, Issued (in Shares)		85,787,354	85,787,354		85,787,354
Common Stock, Shares, Outstanding (in Shares)		74,435,004	74,435,004		74,095,695
Common Stock, Dividends, Per Share, Cash Paid (in Dollars per share)		$ 0.01
Equity Method Investments											100,000,000
Non-Performing Assets Purchased									168,100,000
Subsidiary Nonperforming Assets			45,200,000		93,100,000
Treasury [Member]
Dividends, Preferred Stock, Cash			214,000,000
Accretion Expense [Member]
Accretion Expense			1,500,000
Cash Paid [Member]
Dividends, Preferred Stock, Cash					9,700,000
Cash Paid [Member]
Dividends, Preferred Stock, Cash			$ 8,700,000

[1] Includes $1.5 million in accelerated accretion related to the redemption of the Preferred Shares.