Note 4 - Loans - Summary of Loans Receivable (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Loans receivable	$ 780,538	$ 618,031
Deferred loan fees, net	(1,303)	(1,098)
Allowance for loan losses	(8,600)	(6,600)	$ (5,750)
Total loans, net	770,635	610,333
Residential Portfolio Segment [Member]
Loans receivable	157,898	144,107
Allowance for loan losses	(1,301)	(1,301)	(1,301)
Commercial Real Estate Portfolio Segment [Member]
Loans receivable	434,025	328,438
Allowance for loan losses	(4,826)	(3,593)	(2,778)
Home Equity Portfolio Segment [Member]
Loans receivable	56,414	52,159
Allowance for loan losses	(477)	(477)	(506)
Consumer Portfolio Segment [Member]
Loans receivable	18,882	16,565
Allowance for loan losses	(284)	(190)	(225)
Commercial Portfolio Segment [Member]
Loans receivable	113,319	76,762
Allowance for loan losses	$ (1,712)	$ (1,039)	$ (940)

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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