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Note 3 - Loans and Allowance for Loan Losses - Age Analysis of Past Due Loans (Details) - USD ($) | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Loans and Leases Receivable, Net of Deferred Income, Total |  | $ 3,248,841,000 | $ 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 |  | 2,810,309,000 | 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] | 1,103,807,000 | 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 |  | 43,111,000 | 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 |  | 550,504,000 | 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 |  | 950,993,000 | 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 |  | 161,894,000 | 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 |  | 438,532,000 | 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 |  | 58,240,000 | 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 |  | 380,292,000 | 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 |  | 250,000 | 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 |  | 250,000 | 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 |  | 50,000 | 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 |  | 200,000 | 1,147,000
Financial Asset, 60 to 89 Days Past Due [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 942,000 | 681,000
Financial Asset, 60 to 89 Days Past Due [Member] | Commercial Portfolio Segment [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 887,000 | 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 |  | 456,000 | 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 |  | 431,000 | 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 |  | 55,000 | 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 |  | 0 | 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 |  | 55,000 | 247,000
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 742,000 | 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 |  | 606,000 | 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 |  | 606,000 | 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 |  | 136,000 | 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 |  | 101,000 | 342,000
Financial Asset, Past Due [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 1,934,000 | 3,041,000
Financial Asset, Past Due [Member] | Commercial Portfolio Segment [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 1,493,000 | 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 |  | 1,062,000 | 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 |  | 431,000 | 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 |  | 441,000 | 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 |  | 85,000 | 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 |  | 356,000 | 1,736,000
Financial Asset, Not Past Due [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 3,246,907,000 | 3,190,429,000
Financial Asset, Not Past Due [Member] | Commercial Portfolio Segment [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 2,808,816,000 | 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 |  | 1,102,745,000 | 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 |  | 43,111,000 | 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 |  | 550,073,000 | 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 |  | 950,993,000 | 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 |  | 161,894,000 | 146,095,000
Financial Asset, Not Past Due [Member] | Retail Portfolio Segment [Member] |  |  |
Loans and Leases Receivable, Net of Deferred Income, Total |  | 438,091,000 | 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 |  | 58,155,000 | 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 |  | $ 379,936,000 | $ 336,152,000
[1] | Includes $246 million and $365 million in loans originated under the Paycheck Protection Program for June 30, 2021 and December 31, 2020, respectively.

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