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Note 4 - Loans and Allowance for Credit Losses on Loans (Details Textual) Pure in Thousands | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2022 USD ($) | Jun. 30, 2021 USD ($) | Jun. 30, 2022 USD ($) | Jun. 30, 2021 USD ($) | Mar. 07, 2022 USD ($) | Dec. 31, 2021 USD ($) | May 31, 2021 USD ($)
Financing Receivable, Accrued Interest, after Allowance for Credit Loss |  | $ 12,000,000 |  | $ 12,000,000 |  |  | $ 11,000,000 |
Financing Receivable, before Allowance for Credit Loss, Total | [1] | 4,877,324,000 |  | 4,877,324,000 |  |  | 4,169,303,000 |
Loans and Leases Receivable, Related Parties, Ending Balance |  | 59,000,000 |  | 59,000,000 |  |  | 54,000,000 |
Financing Receivable, after Allowance for Credit Loss, Total |  | 4,810,962,000 |  | 4,810,962,000 |  |  | 4,115,405,000 |
Financing Receivable, Purchased with Credit Deterioration, Interest Income |  | 2,000,000.0 | $ 151,000 | 2,900,000 | $ 151,000 |  |  |
Financing Receivable, Nonaccrual, Interest Income |  | $ 0 | $ 0 | $ 0 | $ 0 |  |  |
Financing Receivable, Modifications, Number of Contracts |  | 0 | 0 | 0 | 0 |  |  |
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts |  | 0 | 0 | 0 | 0 |  |  |
Mortgage Loans in Process of Foreclosure, Amount |  | $ 1,200,000 |  | $ 1,200,000 |  |  | 917,000 |
Asset Pledged as Collateral [Member] | Federal Home Loan Bank Advances [Member] |  |  |  |  |  |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 2,660,000,000 |  | 2,660,000,000 |  |  | $ 2,200,000,000 |
Commonwealth [Member] |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans, Gross |  |  |  |  |  | $ 632,404,000 |  |
Commonwealth [Member] | Financial Asset Acquired with Credit Deterioration [Member] |  |  |  |  |  |  |  |
Financing Receivable, after Allowance for Credit Loss, Total |  | 69,000,000 |  | 69,000,000 |  |  |  |
Kentucky Bancshares [Member] |  |  |  |  |  |  |  |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Loans, Gross |  |  |  |  |  |  |  | $ 755,175,000
Kentucky Bancshares [Member] | Financial Asset Acquired with Credit Deterioration [Member] |  |  |  |  |  |  |  |
Financing Receivable, after Allowance for Credit Loss, Total |  | $ 12,000,000 |  | $ 12,000,000 |  |  |  |
[1] | Total loans are presented inclusive of premiums, discounts and net loan origination fees and costs.

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