Note 12 - Income Taxes (Details) - Deferred Tax Assets and Liabilities (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Deferred Tax Assets
Loan loss allowance, due to differences in computation of bad debts	$ 89,560	$ 100,774
Write-down on equity securities and venture capital investments	2,857	3,374
Share-based compensation	13,573	16,120
State tax	6,493	4,479
Non-accrual interest	3,968	3,208
Write-down on other real estate owned	8,595	10,302
Accrual for bonuses	3,380	432
Accrual for litigation	2,415	2,415
Unrealized loss on interest rate swaps		175
Unrealized loss on securities available-for-sale, net	21,569
Other, net	4,214	2,937
Gross deferred tax assets	156,624	144,216
Deferred Tax Liabilities
Core deposit intangibles		(1,632)
Investment in aircraft financing trust and venture capital partnerships		(19,684)
Unrealized gain on securities available-for-sale, net		(338)
Basis difference in acquired assets	(3,138)	(3,145)
Dividends on Federal Home Loan Bank common stock	(2,986)	(3,071)
Other, net	(2,773)	(1,939)
Gross deferred tax liabilities	(8,897)	(29,809)
Valuation allowance	(1,263)	(2,125)
Net deferred tax assets	$ 146,464	$ 112,282