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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 ($) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021
Balance |  | $ 35,153,000 | $ 38,695,000 | $ 35,363,000 | $ 37,967,000 |
Provision for credit losses |  | 500,000 | (3,100,000) | 600,000 | (2,800,000) |
Charge-offs |  | (15,000) | (68,000) | (220,000) | (121,000) |
Recoveries |  | 336,000 | 386,000 | 631,000 | 867,000 |
Balance |  | 35,974,000 | 35,913,000 | 35,974,000 | 35,913,000 |
Ending balance: individually evaluated for impairment |  |  | 787,000 |  | 787,000 |
Ending balance: collectively evaluated for impairment |  |  | 35,126,000 |  | 35,126,000 |
Ending balance | [1] |  |  |  |  | $ 3,413,349,000
Ending balance: individually evaluated for impairment | [1] |  |  |  |  | 19,366,000
Ending balance: collectively evaluated for impairment | [1] |  |  |  |  | 3,393,983,000
Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member] |  |  |  |  |  |
Balance |  |  |  | (400,000) |  |
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |  |  |  |  |
Balance |  | 8,413,000 | 10,111,000 | 10,782,000 | 9,424,000 |
Provision for credit losses |  | 150,000 | (764,000) | (592,000) | (181,000) |
Charge-offs |  | 0 | (54,000) | (171,000) | (54,000) |
Recoveries |  | 45,000 | 47,000 | 160,000 | 151,000 |
Balance |  | 8,608,000 | 9,340,000 | 8,608,000 | 9,340,000 |
Ending balance: individually evaluated for impairment |  |  | 355,000 |  | 355,000 |
Ending balance: collectively evaluated for impairment |  |  | 8,985,000 |  | 8,985,000 |
Ending balance | [1] |  |  |  |  | 1,097,309,000
Ending balance: individually evaluated for impairment | [1] |  |  |  |  | 5,010,000
Ending balance: collectively evaluated for impairment | [1] |  |  |  |  | 1,092,299,000
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member] |  |  |  |  |  |
Balance |  |  |  | (1,571,000) |  |
Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] |  |  |  |  |  |
Balance |  | 455,000 | 720,000 | 420,000 | 679,000 |
Provision for credit losses |  | (10,000) | (243,000) | 96,000 | (203,000) |
Charge-offs |  | 0 | 0 | (29,000) | (15,000) |
Recoveries |  | 1,000 | 2,000 | 2,000 | 18,000 |
Balance |  | 446,000 | 479,000 | 446,000 | 479,000 |
Ending balance: individually evaluated for impairment |  |  | 0 |  | 0 |
Ending balance: collectively evaluated for impairment |  |  | 479,000 |  | 479,000 |
Ending balance |  |  |  |  |  | 43,239,000
Ending balance: individually evaluated for impairment |  |  |  |  |  | 0
Ending balance: collectively evaluated for impairment |  |  |  |  |  | 43,239,000
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] |  |  |  |  |  |
Balance |  |  |  | (43,000) |  |
Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member] |  |  |  |  |  |
Balance |  | 5,803,000 | 8,304,000 | 6,045,000 | 8,246,000 |
Provision for credit losses |  | (251,000) | (696,000) | 35,000 | (877,000) |
Charge-offs |  | 0 | (12,000) | 0 | (12,000) |
Recoveries |  | 26,000 | 105,000 | 58,000 | 344,000 |
Balance |  | 5,578,000 | 7,701,000 | 5,578,000 | 7,701,000 |
Ending balance: individually evaluated for impairment |  |  | 117,000 |  | 117,000 |
Ending balance: collectively evaluated for impairment |  |  | 7,584,000 |  | 7,584,000 |
Ending balance |  |  |  |  |  | 565,758,000
Ending balance: individually evaluated for impairment |  |  |  |  |  | 10,435,000
Ending balance: collectively evaluated for impairment |  |  |  |  |  | 555,323,000
Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member] |  |  |  |  |  |
Balance |  |  |  | (560,000) |  |
Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] |  |  |  |  |  |
Balance |  | 10,322,000 | 13,751,000 | 13,301,000 | 13,611,000 |
Provision for credit losses |  | (708,000) | (966,000) | (1,153,000) | (826,000) |
Charge-offs |  | 0 | 0 | 0 | 0 |
Recoveries |  | 0 | 0 | 0 | 0 |
Balance |  | 9,614,000 | 12,785,000 | 9,614,000 | 12,785,000 |
Ending balance: individually evaluated for impairment |  |  | 5,000 |  | 5,000 |
Ending balance: collectively evaluated for impairment |  |  | 12,780,000 |  | 12,780,000 |
Ending balance |  |  |  |  |  | 1,027,415,000
Ending balance: individually evaluated for impairment |  |  |  |  |  | 146,000
Ending balance: collectively evaluated for impairment |  |  |  |  |  | 1,027,269,000
Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member] |  |  |  |  |  |
Balance |  |  |  | (2,534,000) |  |
Commercial Portfolio Segment [Member] | Real Estate Multi Family and Residential Rental Loan [Member] |  |  |  |  |  |
Balance |  | 1,276,000 | 1,825,000 | 1,695,000 | 1,819,000 |
Provision for credit losses |  | (8,000) | (38,000) | 186,000 | (32,000) |
Charge-offs |  | 0 | 0 | 0 | 0 |
Recoveries |  | 6,000 | 0 | 14,000 | 0 |
Balance |  | 1,274,000 | 1,787,000 | 1,274,000 | 1,787,000 |
Ending balance: individually evaluated for impairment |  |  | 0 |  | 0 |
Ending balance: collectively evaluated for impairment |  |  | 1,787,000 |  | 1,787,000 |
Ending balance |  |  |  |  |  | 176,593,000
Ending balance: individually evaluated for impairment |  |  |  |  |  | 91,000
Ending balance: collectively evaluated for impairment |  |  |  |  |  | 176,502,000
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] |  |  |  |  |  |
Balance |  |  |  | (621,000) |  |
Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member] |  |  |  |  |  |
Balance |  | 8,562,000 | 2,953,000 | 2,449,000 | 3,240,000 |
Provision for credit losses |  | 1,464,000 | (263,000) | 2,057,000 | (600,000) |
Charge-offs |  | 0 | 0 | (2,000) | (34,000) |
Recoveries |  | 241,000 | 204,000 | 368,000 | 288,000 |
Balance |  | 10,267,000 | 2,894,000 | 10,267,000 | 2,894,000 |
Ending balance: individually evaluated for impairment |  |  | 103,000 |  | 103,000 |
Ending balance: collectively evaluated for impairment |  |  | 2,791,000 |  | 2,791,000 |
Ending balance |  |  |  |  |  | 442,547,000
Ending balance: individually evaluated for impairment |  |  |  |  |  | 2,437,000
Ending balance: collectively evaluated for impairment |  |  |  |  |  | 440,110,000
Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member] |  |  |  |  |  |
Balance |  |  |  | 5,395,000 |  |
Retail Portfolio Segment [Member] | Home Equity and Other [Member] |  |  |  |  |  |
Balance |  | 191,000 | 841,000 | 626,000 | 889,000 |
Provision for credit losses |  | (28,000) | (125,000) | (61,000) | (207,000) |
Charge-offs |  | (15,000) | (2,000) | (18,000) | (6,000) |
Recoveries |  | 17,000 | 28,000 | 29,000 | 66,000 |
Balance |  | 165,000 | 742,000 | 165,000 | 742,000 |
Ending balance: individually evaluated for impairment |  |  | 207,000 |  | 207,000 |
Ending balance: collectively evaluated for impairment |  |  | 535,000 |  | 535,000 |
Ending balance |  |  |  |  |  | 60,488,000
Ending balance: individually evaluated for impairment |  |  |  |  |  | 1,247,000
Ending balance: collectively evaluated for impairment |  |  |  |  |  | $ 59,241,000
Retail Portfolio Segment [Member] | Home Equity and Other [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member] |  |  |  |  |  |
Balance |  |  |  | (411,000) |  |
Unallocated Financing Receivables [Member] |  |  |  |  |  |
Balance |  | 131,000 | 190,000 | 45,000 | 59,000 |
Provision for credit losses |  | (109,000) | (5,000) | 32,000 | 126,000 |
Charge-offs |  | 0 | 0 | 0 | 0 |
Recoveries |  | 0 | 0 | 0 | 0 |
Balance |  | $ 22,000 | 185,000 | 22,000 | 185,000 |
Ending balance: individually evaluated for impairment |  |  | 0 |  | 0 |
Ending balance: collectively evaluated for impairment |  |  | $ 185,000 |  | $ 185,000 |
Unallocated Financing Receivables [Member] | Cumulative Effect, Period of Adoption, Adjustment [Member] | Accounting Standards Update 2016-13 [Member] |  |  |  |  |  |
Balance |  |  |  | $ (55,000) |  |
[1] | Excludes $40.1 million in loans originated under the Paycheck Protection Program.

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