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Note 7 - Loans - Aging of Troubled Debt Restructurings (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Loans current and past due less than 30 days	$ 1,149,054	$ 1,166,748
Nonaccrual loans	12,309	9,218
Financing Receivables 30 to 89 Days Past Due [Member]
Loans past due	13,053	10,023
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Loans past due	5,366	5,451
Troubled Debt Restructuring [Member]
Loans current and past due less than 30 days	176	889
Nonaccrual loans	1,730	1,737
Troubled debt restructurings	2,102	2,626
Troubled Debt Restructuring [Member] | Financing Receivables 30 to 89 Days Past Due [Member]
Loans past due	196	0
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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- Definition

Recorded investment in financing receivables that are current and less than 30 days past due.

+ References

No definition available.

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- Definition

Amount of financing receivable modified as troubled debt restructuring.

+ References

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