Number of financing receivable contracts modified as troubled debt restructuring within previous 12 months, with subsequent payment default.

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-Topic 310
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Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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Reflects the carrying amount of loans deemed to be questionable as to collection on which no interest is continuing to be recognized.

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Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process.

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The amortization period of financing receivables.

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

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The maturity period for financing receivables.

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Number of payment deferrals on loans receivable related to loan modification programs offered to financial institution customers affected by COVID-19.

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Loans where the borrowers have experienced financial difficulty and the Company has identified as a potential future loss. Additional monitoring is administered to these loans.

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Note 2 - Loans and Allowance for Loan Losses (Details Textual)	9 Months Ended	12 Months Ended
	Sep. 30, 2020 USD ($)	Dec. 31, 2019 USD ($)	Jun. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)
Loans and Leases Receivable, Gross, Total	$ 2,297,104,000	$ 2,093,042,000		$ 1,989,765,000
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest		$ 2,600,000	$ 311,000
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts	0	0
Financing Receivable, Number of Payment Deferrals	48
Financing Receivable, Deferred Payments	$ 79,100,000
Mortgage Loans in Process of Foreclosure, Amount	134,000	$ 0
Potential Problem Loans	8,500,000	10,700,000
Real Estate Portfolio Segment [Member]
Loans and Leases Receivable, Gross, Total	2,035,408,000	1,929,325,000
Commercial Portfolio Segment [Member]
Loans and Leases Receivable, Gross, Total	189,655,000	98,265,000		$ 90,450,000
Commercial Portfolio Segment [Member] \| SBA CARES Act Paycheck Protection Program [Member]
Loans and Leases Receivable, Gross, Total	84,700,000
Consumer Portfolio Segment [Member]
Loans and Leases Receivable, Gross, Total	$ 61,249,000	$ 54,834,000
Minimum [Member] \| Real Estate Portfolio Segment [Member]
Financing Receivable, Amortization Period (Year)	15 years
Financing Receivable, Maturity Period (Year)	5 years
Minimum [Member] \| Consumer Portfolio Segment [Member]
Financing Receivable, Maturity Period (Year)	1 year
Maximum [Member] \| Real Estate Portfolio Segment [Member]
Financing Receivable, Amortization Period (Year)	30 years
Financing Receivable, Maturity Period (Year)	15 years
Maximum [Member] \| Consumer Portfolio Segment [Member]
Financing Receivable, Maturity Period (Year)	5 years