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Income Taxes (Deferred Tax Assets and Deferred Tax Liabilities) (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Deferred tax assets: |  |
Allowance for loan losses | $ 109,903 | $ 96,876
Investments in qualified affordable housing partnerships, tax credit and other investments, net | 11,190 | 3,691
Deferred compensation | 23,816 | 18,724
Interest income on nonaccrual loans | 9,527 | 8,602
State taxes | 5,848 | 4,506
Unrealized gains/losses on securities | 324 | 20,233
Tax credit carryforwards | 0 | 26,831
Premises and equipment | 1,578 | 1,887
Deferred gain | 0 | 4,476
Lease liability | 35,948 | 2,604
Other | 641 | 6,178
Total gross deferred tax assets | 198,775 | 194,608
Valuation allowance | (21) | (128)
Total deferred tax assets, net of valuation allowance | 198,754 | 194,480
Deferred tax liabilities: |  |
Equipment lease financing | 30,669 | 30,523
Investments in qualified affordable housing partnerships, tax credit and other investments, net | 12,301 | 30,706
Core deposit intangibles | 3,032 | 4,427
FHLB stock dividends | 1,854 | 1,866
Mortgage servicing assets | 1,839 | 2,390
Acquired debt | 1,679 | 1,771
Prepaid expenses | 1,100 | 1,207
Premises and equipment | 1,890 | 1,078
Operating lease right-of-use assets | 34,313 |
Other | 3,590 | 2,872
Total gross deferred tax liabilities | 92,267 | 76,840
Net deferred tax assets | $ 106,487 | $ 117,640

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- Definition The tax effect as of the balance sheet date of the amount of the estimated future tax deductions arising from the provision for loan losses, which can only be deducted for tax purposes when actual losses are incurred and which can only be realized, if sufficient tax-basis income is generated in future periods to enable the deduction to be taken. + References No definition available. + Details
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