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Note 3 - Loans and Allowance for Credit Losses - Activity in Allowance for Loan Losses and the Recorded Investments in Loans (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Balance | $ 35,363,000 | $ 37,967,000 |  | $ 23,889,000 |
Financing Receivable, Allowance for Credit Loss, Ending Balance | 42,246,000 | 35,363,000 |  | 37,967,000 |
Provision for credit losses | 6,550,000 | (4,300,000) |  | 14,050,000 |
Charge-offs | (292,000) | (1,044,000) |  | (838,000) |
Recoveries | 1,025,000 | 2,740,000 |  | 866,000 |
Balance | 42,246,000 | 35,363,000 |  | 37,967,000 |
Ending balance: individually evaluated for impairment |  | 546,000 |  | 551,000 |
Ending balance: collectively evaluated for impairment |  | 34,817,000 |  | 37,416,000 |
Ending balance |  | 3,413,349,000 | [1] | 2,828,211,000 | [2]
Ending balance: individually evaluated for impairment |  | 19,366,000 | [1] | 26,958,000 | [2]
Ending balance: collectively evaluated for impairment |  | 3,393,983,000 | [1] | 2,801,253,000 | [2]
Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Ending Balance | (400,000) |  |  |  |
Balance | (400,000) |  |  |  |
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |  |  |  |
Balance | 10,782,000 | 9,424,000 |  | 6,659,000 |
Financing Receivable, Allowance for Credit Loss, Ending Balance | 10,203,000 | 10,782,000 |  | 9,424,000 |
Provision for credit losses | 946,000 | 2,030,000 |  | 2,921,000 |
Charge-offs | (171,000) | (882,000) |  | (247,000) |
Recoveries | 217,000 | 210,000 |  | 91,000 |
Balance | 10,203,000 | 10,782,000 |  | 9,424,000 |
Ending balance: individually evaluated for impairment |  | 266,000 |  | 53,000 |
Ending balance: collectively evaluated for impairment |  | 10,516,000 |  | 9,371,000 |
Ending balance |  | 1,097,309,000 | [1] | 780,164,000 | [2]
Ending balance: individually evaluated for impairment |  | 5,010,000 | [1] | 6,585,000 | [2]
Ending balance: collectively evaluated for impairment |  | 1,092,299,000 | [1] | 773,579,000 | [2]
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Ending Balance | (1,571,000) |  |  |  |
Balance | (1,571,000) |  |  |  |
Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] |  |  |  |  |
Balance | 420,000 | 679,000 |  | 466,000 |
Financing Receivable, Allowance for Credit Loss, Ending Balance | 490,000 | 420,000 |  | 679,000 |
Provision for credit losses | 138,000 | (618,000) |  | 289,000 |
Charge-offs | (29,000) | (15,000) |  | (113,000) |
Recoveries | 4,000 | 374,000 |  | 37,000 |
Balance | 490,000 | 420,000 |  | 679,000 |
Ending balance: individually evaluated for impairment |  | 0 |  | 0 |
Ending balance: collectively evaluated for impairment |  | 420,000 |  | 679,000 |
Ending balance |  | 43,239,000 | [1] | 55,055,000 | [2]
Ending balance: individually evaluated for impairment |  | 0 | [1] | 0 | [2]
Ending balance: collectively evaluated for impairment |  | 43,239,000 | [1] | 55,055,000 | [2]
Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Ending Balance | (43,000) |  |  |  |
Balance | (43,000) |  |  |  |
Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member] |  |  |  |  |
Balance | 6,045,000 | 8,246,000 |  | 6,291,000 |
Financing Receivable, Allowance for Credit Loss, Ending Balance | 5,914,000 | 6,045,000 |  | 8,246,000 |
Provision for credit losses | 378,000 | (3,308,000) |  | 1,881,000 |
Charge-offs | (38,000) | (12,000) |  | (235,000) |
Recoveries | 89,000 | 1,119,000 |  | 309,000 |
Balance | 5,914,000 | 6,045,000 |  | 8,246,000 |
Ending balance: individually evaluated for impairment |  | 84,000 |  | 77,000 |
Ending balance: collectively evaluated for impairment |  | 5,961,000 |  | 8,169,000 |
Ending balance |  | 565,758,000 | [1] | 529,953,000 | [2]
Ending balance: individually evaluated for impairment |  | 10,435,000 | [1] | 15,327,000 | [2]
Ending balance: collectively evaluated for impairment |  | 555,323,000 | [1] | 514,626,000 | [2]
Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Ending Balance | (560,000) |  |  |  |
Balance | (560,000) |  |  |  |
Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] |  |  |  |  |
Balance | 13,301,000 | 13,611,000 |  | 6,761,000 |
Financing Receivable, Allowance for Credit Loss, Ending Balance | 10,164,000 | 13,301,000 |  | 13,611,000 |
Provision for credit losses | (603,000) | (310,000) |  | 6,837,000 |
Charge-offs | 0 | 0 |  | 0 |
Recoveries | 0 | 0 |  | 13,000 |
Balance | 10,164,000 | 13,301,000 |  | 13,611,000 |
Ending balance: individually evaluated for impairment |  | 0 |  | 8,000 |
Ending balance: collectively evaluated for impairment |  | 13,301,000 |  | 13,603,000 |
Ending balance |  | 1,027,415,000 | [1] | 917,436,000 | [2]
Ending balance: individually evaluated for impairment |  | 146,000 | [1] | 503,000 | [2]
Ending balance: collectively evaluated for impairment |  | 1,027,269,000 | [1] | 916,933,000 | [2]
Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Ending Balance | (2,534,000) |  |  |  |
Balance | (2,534,000) |  |  |  |
Commercial Portfolio Segment [Member] | Real Estate Multi Family and Residential Rental Loan [Member] |  |  |  |  |
Balance | 1,695,000 | 1,819,000 |  | 893,000 |
Financing Receivable, Allowance for Credit Loss, Ending Balance | 1,269,000 | 1,695,000 |  | 1,819,000 |
Provision for credit losses | 152,000 | (150,000) |  | 907,000 |
Charge-offs | 0 | 0 |  | (18,000) |
Recoveries | 43,000 | 26,000 |  | 37,000 |
Balance | 1,269,000 | 1,695,000 |  | 1,819,000 |
Ending balance: individually evaluated for impairment |  | 4,000 |  | 0 |
Ending balance: collectively evaluated for impairment |  | 1,691,000 |  | 1,819,000 |
Ending balance |  | 176,593,000 | [1] | 146,095,000 | [2]
Ending balance: individually evaluated for impairment |  | 91,000 | [1] | 0 | [2]
Ending balance: collectively evaluated for impairment |  | 176,502,000 | [1] | 146,095,000 | [2]
Commercial Portfolio Segment [Member] | Real Estate Multi Family and Residential Rental Loan [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Ending Balance | (621,000) |  |  |  |
Balance | (621,000) |  |  |  |
Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member] |  |  |  |  |
Balance | 2,449,000 | 3,240,000 |  | 1,888,000 |
Financing Receivable, Allowance for Credit Loss, Ending Balance | 14,027,000 | 2,449,000 |  | 3,240,000 |
Provision for credit losses | 5,621,000 | (1,629,000) |  | 1,168,000 |
Charge-offs | (33,000) | (92,000) |  | (129,000) |
Recoveries | 595,000 | 930,000 |  | 313,000 |
Balance | 14,027,000 | 2,449,000 |  | 3,240,000 |
Ending balance: individually evaluated for impairment |  | 69,000 |  | 172,000 |
Ending balance: collectively evaluated for impairment |  | 2,380,000 |  | 3,068,000 |
Ending balance |  | 442,547,000 | [1] | 337,888,000 | [2]
Ending balance: individually evaluated for impairment |  | 2,437,000 | [1] | 3,273,000 | [2]
Ending balance: collectively evaluated for impairment |  | 440,110,000 | [1] | 334,615,000 | [2]
Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Ending Balance | 5,395,000 |  |  |  |
Balance | 5,395,000 |  |  |  |
Retail Portfolio Segment [Member] | Home Equity and Other [Member] |  |  |  |  |
Balance | 626,000 | 889,000 |  | 861,000 |
Financing Receivable, Allowance for Credit Loss, Ending Balance | 160,000 | 626,000 |  | 889,000 |
Provision for credit losses | (111,000) | (301,000) |  | 58,000 |
Charge-offs | (21,000) | (43,000) |  | (96,000) |
Recoveries | 77,000 | 81,000 |  | 66,000 |
Balance | 160,000 | 626,000 |  | 889,000 |
Ending balance: individually evaluated for impairment |  | 123,000 |  | 241,000 |
Ending balance: collectively evaluated for impairment |  | 503,000 |  | 648,000 |
Ending balance |  | 60,488,000 | [1] | 61,620,000 | [2]
Ending balance: individually evaluated for impairment |  | 1,247,000 | [1] | 1,270,000 | [2]
Ending balance: collectively evaluated for impairment |  | 59,241,000 | [1] | 60,350,000 | [2]
Retail Portfolio Segment [Member] | Home Equity and Other [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Ending Balance | (411,000) |  |  |  |
Balance | (411,000) |  |  |  |
Unallocated Financing Receivables [Member] |  |  |  |  |
Balance | 45,000 | 59,000 |  | 70,000 |
Financing Receivable, Allowance for Credit Loss, Ending Balance | 19,000 | 45,000 |  | 59,000 |
Provision for credit losses | 29,000 | (14,000) |  | (11,000) |
Charge-offs | 0 | 0 |  | 0 |
Recoveries | 0 | 0 |  | 0 |
Balance | 19,000 | 45,000 |  | 59,000 |
Ending balance: individually evaluated for impairment |  | 0 |  | 0 |
Ending balance: collectively evaluated for impairment |  | $ 45,000 |  | $ 59,000 |
Unallocated Financing Receivables [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Ending Balance | (55,000) |  |  |  |
Balance | $ (55,000) |  |  |  |
[1] | Excludes $40.1 million in loans originated under the Paycheck Protection Program.
[2] | Excludes $365 million in loans originated under the Paycheck Protection Program.

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- Definition Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and Paycheck Protection Program loans. + References No definition available. + Details
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