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Note 10 - Federal Income Taxes - Significant Components of Deferred Tax Assets and Liabilities (Details) - USD ($) | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Allowance for credit losses | $ 8,872,000 | $ 7,426,000
Deferred compensation | 232,000 | 259,000
Stock compensation | 1,018,000 | 941,000
Nonaccrual loan interest income | 136,000 | 159,000
Unrealized loss on securities | 17,369,000 | 991,000
Lease liability | 810,000 | 749,000
Deferred loan fees and costs | 0 | 520,000
Other | 494,000 | 595,000
Deferred tax asset | 28,931,000 | 11,640,000
Depreciation | 697,000 | 1,168,000
Prepaid expenses | 504,000 | 416,000
Core deposit intangible | 120,000 | 276,000
Mortgage loan servicing rights | 2,486,000 | 2,572,000
Deferred loan fees and costs | 211,000 | 0
Right of use lease asset | 810,000 | 749,000
Business combination adjustments | 1,877,000 | 2,013,000
Other | 326,000 | 193,000
Deferred tax liability | 7,031,000 | 7,387,000
Total net deferred tax asset | $ 21,900,000 | $ 4,253,000

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