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Note 5 - Credit Quality (Details Textual) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2020 USD ($)	Dec. 31, 2019 USD ($)
Financing Receivable, Collectively Evaluated for Impairment	$ 2,142,670	$ 1,672,634
Restructured Loans, Reserves	$ 500
Performing Status Returned Period (Month)	6 months
Financing Receivable, Troubled Debt Restructuring	$ 13,009	8,917
Financing Receivable, Number of Payment Deferrals	3,362
Financing Receivable, Deferred Payments	$ 426,450
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	100	0
Commercial Portfolio Segment [Member]
Financing Receivable, Collectively Evaluated for Impairment	1,266,110	969,838
Financing Receivable, Deferred Payments	102,540
Consumer Portfolio Segment [Member]
Financing Receivable, Deferred Payments	13,090
Impaired Loans [Member]
Financing Receivable, Collectively Evaluated for Impairment	33,480	24,640
Non-covered Loans [Member]
Financing Receivable, 90 Days or More Past Due, Still Accruing	43	144
Covered Loans [Member]
Financing Receivable, Troubled Debt Restructuring	$ 0	$ 0

X

- Definition

Deferred amounts on loans receivable related to loan modification programs offered to financial institution customers affected by COVID-19.

+ References

No definition available.

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- Definition

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+ References

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- Definition

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+ References

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- Definition

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+ References

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- Definition

The balance of financing receivables that were collectively evaluated for impairment.

+ References

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- Definition

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+ References

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- Definition

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+ References

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-Publisher FASB
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-Subparagraph (a)(2)
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