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Note 3 - Loans and Allowance for Credit Losses - Age Analysis of Past Due Loans (Details) - USD ($) | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Financing Receivable, before Allowance for Credit Loss, Total |  | $ 3,555,790,000 | $ 3,453,459,000
Loans past due 90 days or more still accruing interest |  | 0 | 155,000
Commercial Portfolio Segment [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 3,004,562,000 | 2,950,424,000
Loans past due 90 days or more still accruing interest |  | 0 | 155,000
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total | [1] | 1,153,814,000 | 1,137,419,000
Loans past due 90 days or more still accruing interest |  | 0 | 155,000
Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 52,693,000 | 43,239,000
Loans past due 90 days or more still accruing interest |  | 0 | 0
Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 582,732,000 | 565,758,000
Loans past due 90 days or more still accruing interest |  | 0 | 0
Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 1,007,361,000 | 1,027,415,000
Loans past due 90 days or more still accruing interest |  | 0 | 0
Commercial Portfolio Segment [Member] | Real Estate Multi Family and Residential Rental Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 207,962,000 | 176,593,000
Loans past due 90 days or more still accruing interest |  | 0 | 0
Retail Portfolio Segment [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 551,228,000 | 503,035,000
Loans past due 90 days or more still accruing interest |  | 0 | 0
Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 522,556,000 | 442,547,000
Loans past due 90 days or more still accruing interest |  | 0 | 0
Retail Portfolio Segment [Member] | Other Consumer Loans [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total | [2] | 28,672,000 | 60,488,000
Loans past due 90 days or more still accruing interest |  | 0 | 0
Financial Asset, 30 to 59 Days Past Due [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 1,779,000 | 1,424,000
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Portfolio Segment [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 1,195,000 | 27,000
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 0 | 14,000
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 0 | 13,000
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 1,195,000 | 0
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 0 | 0
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Real Estate Multi Family and Residential Rental Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 0 | 0
Financial Asset, 30 to 59 Days Past Due [Member] | Retail Portfolio Segment [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 584,000 | 1,397,000
Financial Asset, 30 to 59 Days Past Due [Member] | Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 567,000 | 1,265,000
Financial Asset, 30 to 59 Days Past Due [Member] | Retail Portfolio Segment [Member] | Other Consumer Loans [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 17,000 | 132,000
Financial Asset, 60 to 89 Days Past Due [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 89,000 | 243,000
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Portfolio Segment [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 0 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 0 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 0 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 0 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 0 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Real Estate Multi Family and Residential Rental Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 0 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Retail Portfolio Segment [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 89,000 | 243,000
Financial Asset, 60 to 89 Days Past Due [Member] | Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 89,000 | 241,000
Financial Asset, 60 to 89 Days Past Due [Member] | Retail Portfolio Segment [Member] | Other Consumer Loans [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 0 | 2,000
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 154,000 | 295,000
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Portfolio Segment [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 0 | 193,000
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 0 | 193,000
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 0 | 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 0 | 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 0 | 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Real Estate Multi Family and Residential Rental Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 0 | 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Retail Portfolio Segment [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 154,000 | 102,000
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 154,000 | 82,000
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Retail Portfolio Segment [Member] | Other Consumer Loans [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 0 | 20,000
Financial Asset, Past Due [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 2,022,000 | 1,962,000
Financial Asset, Past Due [Member] | Commercial Portfolio Segment [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 1,195,000 | 220,000
Financial Asset, Past Due [Member] | Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 0 | 207,000
Financial Asset, Past Due [Member] | Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 0 | 13,000
Financial Asset, Past Due [Member] | Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 1,195,000 | 0
Financial Asset, Past Due [Member] | Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 0 | 0
Financial Asset, Past Due [Member] | Commercial Portfolio Segment [Member] | Real Estate Multi Family and Residential Rental Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 0 | 0
Financial Asset, Past Due [Member] | Retail Portfolio Segment [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 827,000 | 1,742,000
Financial Asset, Past Due [Member] | Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 810,000 | 1,588,000
Financial Asset, Past Due [Member] | Retail Portfolio Segment [Member] | Other Consumer Loans [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 17,000 | 154,000
Financial Asset, Not Past Due [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 3,553,768,000 | 3,451,497,000
Financial Asset, Not Past Due [Member] | Commercial Portfolio Segment [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 3,003,367,000 | 2,950,204,000
Financial Asset, Not Past Due [Member] | Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 1,153,814,000 | 1,137,212,000
Financial Asset, Not Past Due [Member] | Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 52,693,000 | 43,226,000
Financial Asset, Not Past Due [Member] | Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 581,537,000 | 565,758,000
Financial Asset, Not Past Due [Member] | Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 1,007,361,000 | 1,027,415,000
Financial Asset, Not Past Due [Member] | Commercial Portfolio Segment [Member] | Real Estate Multi Family and Residential Rental Loan [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 207,962,000 | 176,593,000
Financial Asset, Not Past Due [Member] | Retail Portfolio Segment [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 550,401,000 | 501,293,000
Financial Asset, Not Past Due [Member] | Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | 521,746,000 | 440,959,000
Financial Asset, Not Past Due [Member] | Retail Portfolio Segment [Member] | Other Consumer Loans [Member] |  |  |
Financing Receivable, before Allowance for Credit Loss, Total |  | $ 28,655,000 | $ 60,334,000
[1] | For March 31, 2022, and December 31, 2021, includes $12.2 million and $40.1 million in loans originated under the Paycheck Protection Program, respectively.
[2] | In conjunction with the adoption of the CECL methodology effective January 1, 2022, home equity lines of credit were reclassified to 1-4 family mortgage loans from other consumer loans. Home equity lines of credit totaled $31.9 million and $29.5 million as of March 31, 2022 and December 31, 2021, respectively.

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