Note 17 - Fair Value of Financial Instruments (Detail) (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Financial Assets At Fair Value Option	$ 54,500,000	$ 68,700,000
Financial Liabilities At Fair Value Option	23,900,000	26,300,000
Financial Assets, Fair Value Option Election During Period		10,000,000
Fair Value, Option, Changes in Fair Value, Gain (Loss)	55,000	1,960,000	47,000
Financial Liabilites At Fair Value Option, Contractual Principal	61,900,000
Financial Liabilities At Fair Value Option, Accrued Interest Payable	100,000	400,000
Change In The Fair Value Of Interest Rate Caps [Member]
Fair Value, Option, Changes in Fair Value, Gain (Loss)	(300,000)	(2,200,000)	(4,900,000)
Change In The Fair Value Of Interest Rate Swaps [Member]
Fair Value, Option, Changes in Fair Value, Gain (Loss)	$ (1,900,000)
Nonaccruing Collateral Dependent Loans - Percent Of The Appraised Or Internally Estimated Value Of The Property [Member]
Fair Value Inputs, Discount Rate	85.00%