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Note 12 - Income Taxes (Details) - Deferred Tax Assets and Liabilities - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
--- | --- | ---
Deferred Tax Assets |  |
Loan loss allowance, due to differences in computation of bad debts | $ 59,639 | $ 66,999
Share-based compensation | 7,513 | 12,808
Accrual for bonuses | 4,984 | 4,585
Non-accrual interest | 4,929 | 3,735
Accrual for litigation | 3,209 | 2,918
Write-down on equity securities and venture capital investments | 3,981 | 2,697
Write-down on other real estate owned | 384 | 1,357
Depreciation and amortization | 2,917 |
State tax | 4,802 | 3,253
Unrealized loss on interest rate swaps | 2,173 | 1,739
Unrealized loss on securities available-for-sale, net | 3,940 | 2,301
Other, net | 1,743 | 2,179
Gross deferred tax assets | 100,214 | 104,571
Deferred Tax Liabilities |  |
Investment in affordable housing partnerships | (1,444) | (703)
Basis difference in acquired assets | (4,947) | (3,321)
Dividends on Federal Home Loan Bank common stock | (1,322) | (1,927)
Other, net | (1,937) | (2,372)
Gross deferred tax liabilities | (9,650) | (8,323)
Net deferred tax assets | $ 90,564 | $ 96,248

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