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Note 8 - Loans - Aging of Troubled Debt Restructurings (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Loans current and past due less than 30 days | $ 1,166,748 | $ 810,195
Nonaccrual loans | 9,218 | 13,113
Financing Receivables 30 to 89 Days Past Due [Member] |  |
Loans past due | 10,023 | 8,308
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Loans past due | 5,451 | 9,060
Troubled Debt Restructuring [Member] |  |
Loans current and past due less than 30 days | 889 | 612
Nonaccrual loans | 1,737 | 2,884
Troubled debt restructurings | 2,626 | 3,539
Troubled Debt Restructuring [Member] | Financing Receivables 30 to 89 Days Past Due [Member] |  |
Loans past due | 0 | 43
Troubled Debt Restructuring [Member] | Financial Asset, Equal to or Greater than 90 Days Past Due [Member] |  |
Loans past due | $ 0 | $ 0

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