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Note 4 - Loan Receivables and Allowance for Loan and Lease Losses - Loan Portfolio (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Loans receivable, gross	$ 676,676	$ 730,180
Allowance for loan and lease losses	(10,426)	(10,584)	$ (10,916)	$ (10,115)
Loans receivable, net	666,250	719,596
Commercial Real Estate Portfolio Segment [Member]
Loans receivable, gross	261,461	282,378
Allowance for loan and lease losses	(4,154)	(4,485)	(4,150)	(3,789)
Residential Portfolio Segment [Member]
Loans receivable, gross	147,947	153,851
Allowance for loan and lease losses	(1,909)	(1,379)	(1,120)	(1,038)
Commercial Portfolio Segment [Member]
Loans receivable, gross	138,966	144,297
Allowance for loan and lease losses	(3,624)	(3,284)	(4,390)	(4,340)
Consumer Portfolio Segment [Member]
Loans receivable, gross	56,485	67,635
Allowance for loan and lease losses	(382)	(295)	(534)	(341)
Construction Portfolio Segment [Member]
Loans receivable, gross	55,523	66,984
Allowance for loan and lease losses	(280)	(739)	(603)	(477)
Construction to Permanent Portfolio Segment [Member]
Loans receivable, gross	16,294	15,035
Allowance for loan and lease losses	$ (77)	$ (162)	$ (119)	$ (130)

X

- Definition

Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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- Definition

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.

+ References

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Amount, after allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement.

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