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Note 3 - Loans and Allowance for Loan Losses - Age Analysis of Past Due Loans (Details) - USD ($) | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Loans and Leases Receivable, Net of Deferred Income, Total |  | $ 3,313,709,000 | $ 3,193,470,000
Loans past due 90 days or more still accruing interest |  | 0 | 0
Commercial Portfolio Segment [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 2,842,359,000 | 2,793,962,000
Loans past due 90 days or more still accruing interest |  | 0 | 0
Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total | [1] | 1,074,394,000 | 1,145,423,000
Loans past due 90 days or more still accruing interest |  | 0 | 0
Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 38,380,000 | 55,055,000
Loans past due 90 days or more still accruing interest |  | 0 | 0
Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 551,762,000 | 529,953,000
Loans past due 90 days or more still accruing interest |  | 0 | 0
Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 998,697,000 | 917,436,000
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] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 179,126,000 | 146,095,000
Loans past due 90 days or more still accruing interest |  | 0 | 0
Retail Portfolio Segment [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 471,350,000 | 399,508,000
Loans past due 90 days or more still accruing interest |  | 0 | 0
Retail Portfolio Segment [Member] | Home Equity and Other [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 59,732,000 | 61,620,000
Loans past due 90 days or more still accruing interest |  | 0 | 0
Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 411,618,000 | 337,888,000
Loans past due 90 days or more still accruing interest |  | 0 | 0
Financial Asset, 30 to 59 Days Past Due [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 418,000 | 1,520,000
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Portfolio Segment [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 0 | 261,000
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 0 | 261,000
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 0 | 0
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 0 | 0
Financial Asset, 30 to 59 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, 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] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 0 | 0
Financial Asset, 30 to 59 Days Past Due [Member] | Retail Portfolio Segment [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 418,000 | 1,259,000
Financial Asset, 30 to 59 Days Past Due [Member] | Retail Portfolio Segment [Member] | Home Equity and Other [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 103,000 | 112,000
Financial Asset, 30 to 59 Days Past Due [Member] | Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 315,000 | 1,147,000
Financial Asset, 60 to 89 Days Past Due [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 374,000 | 681,000
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Portfolio Segment [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 0 | 369,000
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 0 | 172,000
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 0 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 0 | 197,000
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, 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] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 0 | 0
Financial Asset, 60 to 89 Days Past Due [Member] | Retail Portfolio Segment [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 374,000 | 312,000
Financial Asset, 60 to 89 Days Past Due [Member] | Retail Portfolio Segment [Member] | Home Equity and Other [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 11,000 | 65,000
Financial Asset, 60 to 89 Days Past Due [Member] | Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 363,000 | 247,000
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 303,000 | 840,000
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Portfolio Segment [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 44,000 | 444,000
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 44,000 | 0
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] |  |  |
Loans and Leases Receivable, Net of Deferred Income, 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] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 0 | 421,000
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 0 | 23,000
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] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 0 | 0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Retail Portfolio Segment [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 259,000 | 396,000
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Retail Portfolio Segment [Member] | Home Equity and Other [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 35,000 | 54,000
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 224,000 | 342,000
Financial Asset, Past Due [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 1,095,000 | 3,041,000
Financial Asset, Past Due [Member] | Commercial Portfolio Segment [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 44,000 | 1,074,000
Financial Asset, Past Due [Member] | Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 44,000 | 433,000
Financial Asset, Past Due [Member] | Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 0 | 0
Financial Asset, Past Due [Member] | Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 0 | 618,000
Financial Asset, Past Due [Member] | Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 0 | 23,000
Financial Asset, Past Due [Member] | Commercial Portfolio Segment [Member] | Real Estate Multi Family and Residential Rental Loan [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 0 | 0
Financial Asset, Past Due [Member] | Retail Portfolio Segment [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 1,051,000 | 1,967,000
Financial Asset, Past Due [Member] | Retail Portfolio Segment [Member] | Home Equity and Other [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 149,000 | 231,000
Financial Asset, Past Due [Member] | Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 902,000 | 1,736,000
Financial Asset, Not Past Due [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 3,312,614,000 | 3,190,429,000
Financial Asset, Not Past Due [Member] | Commercial Portfolio Segment [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 2,842,315,000 | 2,792,888,000
Financial Asset, Not Past Due [Member] | Commercial Portfolio Segment [Member] | Commercial and Industrial [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 1,074,350,000 | 1,144,990,000
Financial Asset, Not Past Due [Member] | Commercial Portfolio Segment [Member] | Vacant Land and Land Development and Residential Construction Loan [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 38,380,000 | 55,055,000
Financial Asset, Not Past Due [Member] | Commercial Portfolio Segment [Member] | Real Estate Owner Occupied Loan [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 551,762,000 | 529,335,000
Financial Asset, Not Past Due [Member] | Commercial Portfolio Segment [Member] | Real Estate Non Owner Occupied Loan [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 998,697,000 | 917,413,000
Financial Asset, Not Past Due [Member] | Commercial Portfolio Segment [Member] | Real Estate Multi Family and Residential Rental Loan [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 179,126,000 | 146,095,000
Financial Asset, Not Past Due [Member] | Retail Portfolio Segment [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 470,299,000 | 397,541,000
Financial Asset, Not Past Due [Member] | Retail Portfolio Segment [Member] | Home Equity and Other [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 59,583,000 | 61,389,000
Financial Asset, Not Past Due [Member] | Retail Portfolio Segment [Member] | One to Four Family Mortgages [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | $ 410,716,000 | $ 336,152,000
[1] | Includes $116 million and $365 million in loans originated under the Paycheck Protection Program for September 30, 2021 and December 31, 2020, respectively.

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