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Income Tax (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Income Tax Contingency [Line Items] |  |  |
Current Federal Tax Expense (Benefit) | $ 50,708 | $ 44,094 | $ 40,471
Current State and Local Tax Expense (Benefit) | 9,610 | 7,822 | 6,359
Current tax (benefit) expense | 60,318 | 51,916 | 46,830
Deferred Federal Income Tax Expense (Benefit) | (5,445) | (12,078) | 60
Deferred State and Local Income Tax Expense (Benefit) | (1,184) | (1,690) | 270
Deferred tax expense (benefit) | (6,629) | (13,768) | 330
Income tax provision | 53,689 | 38,148 | 47,160
Deferred tax assets: |  |  |
Allowance for credit losses | 39,378 | 36,906 |
Deferred Tax Assets, Lease Liability | 15,973 | 15,823 |
Deferred compensation | 14,887 | 11,658 |
Stock option and restricted stock | 3,186 | 2,599 |
OREO | 50 | 16 |
Nonaccrual interest | 118 | 102 |
Deferred Tax Assets, Net operating losses and credit carryforwards | 2,898 | 3,304 |
Other | (1,824) | (278) |
Total deferred tax assets | 78,314 | 70,686 |
Deferred tax liabilities: |  |  |
Asset purchase tax basis difference | (5,052) | (6,590) |
Deferred Tax Liabilities, Leasing Arrangements | (14,510) | (14,501) |
FHLB stock dividends | (810) | (789) |
Deferred loan fees | (5,957) | (5,695) |
deferred tax liabilities, unrealized gains on available-for-sale securities | 7,254 | 49,837 |
deferred tax liabilites, unrealized gains on equity securities | (3,231) | (3,147) |
Deferred tax liabilities, purchase accounting | (14,211) | (7,526) |
Depreciation | (3,304) | (2,427) |
Deferred Tax Liabilities, Derivatives | (5,280) | (7,591) |
Deferred Tax Liabilities, Other | (130) | (112) |
Total deferred tax liabilities | 59,739 | 98,215 |
Deferred Income Tax Asset, Net | 18,575 |  |
Net deferred tax liability |  | (27,529) |
Reconciliation of effective income tax rate with federal statutory tax rate |  |  |
Income tax based on statutory rate | $ 53,867 | $ 40,402 | $ 50,738
Income tax based on statutory rate, percent | 21.00% | 21.00% | 21.00%
Tax exempt instruments | $ (6,306) | $ (5,987) | $ (6,771)
Tax exempt instrument, percent | (2.00%) | (3.00%) | (3.00%)
Bank owned life insurance proceeds | $ (1,444) | $ (1,348) | $ (1,963)
Life insurance proceeds, percent | (1.00%) | (1.00%) | (1.00%)
State income tax, net of federal benefit | $ 7,892 | $ 4,844 | $ 5,134
State income tax, net of federal benefit, Percent | 3.00% | 3.00% | 2.00%
Other, net | $ (320) | $ 237 | $ 22
Other, net, percent | 0.00% | 0.00% | 1.00%
Income tax provision | $ 53,689 | $ 38,148 | $ 47,160
Income tax provision (benefit), percent | 21.00% | 20.00% | 20.00%

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