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Income Taxes - Tax Effects Of Temporary Differences That Give Rise To Significant Portions Of The Deferred Tax Assets And Deferred Tax Liabilities (Details) - USD ($) $ in Thousands | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Deferred tax assets: |  |
Allowance for credit losses | $ 11,057 | $ 10,348
Deferred compensation | 3,145 | 3,233
Accrued salaries | 1,338 | 775
Postretirement benefits | 354 | 346
Equity awards | 2,051 | 2,170
Straight-line leases adjustment | 1,713 | 1,533
Asset retirement obligation | 68 | 71
Reserve for accrued interest receivable | 620 | 675
Reserve for loan commitments | 537 | 226
Employee Stock Ownership Plan | 645 | 647
Other | 317 | 293
Depreciation | 3,229 | 2,798
Fair value adjustments of acquired loans | 1,440 | 4,967
Fair value adjustments of pension benefit obligations | 139 | 140
Total gross deferred tax assets | 26,653 | 28,222
Deferred tax liabilities: |  |
Unrealized gains on securities – AFS | 761 | 5,083
Unrealized actuarial gains on post retirement benefits | 15 | 15
Fair value adjustments of acquired securities | 580 | 825
Fair value adjustments of deposit liabilities | 28 | 3
Deferred loan fees | 2,010 | 1,387
Other | 23 | 26
Total gross deferred tax liabilities | 3,417 | 7,339
Net deferred tax asset | $ 23,236 | $ 20,883

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