Note 6 - Deposit Liabilities (Detail) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Jul. 22, 2010	Jul. 21, 2010
Time Deposits, $100,000 or More	$ 181,000,000	$ 218,000,000
Interest Expense, Time Deposits, $100,000 or More	2,900,000	4,500,000	7,100,000
FDIC Standard Maximum Insurance Amount Per Depositor				250,000	100,000
Time Deposits, $250,000 or More	32,200,000	39,000,000
Related Party Deposit Liabilities	$ 19,100,000	$ 19,100,000