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Note 3 - Loans - Summary of Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018		Sep. 30, 2018	Dec. 31, 2017
Loans	$ 571,253	$ 542,856		$ 539,821
Allowance for loan losses	(4,912)	(5,009)		(4,801)	$ (5,326)
Loans, net	566,341	537,847	[1]
Commercial and Industrial Loans [Member]
Loans	50,557	44,605		42,861
Allowance for loan losses	(566)	(464)		(442)	(418)
Consumer and Other Loans [Member]
Loans	15,608	16,886		17,137
Allowance for loan losses	(754)	(929)		(820)	(771)
Construction and Land Development [Member] | Real Estate 1 [Member]
Loans	45,193	45,867		42,982
Allowance for loan losses	(492)	(561)		(542)	(414)
Secured by Multi-family Residential Properties [Member] | Real Estate 1 [Member]
Loans	226,828	215,945		211,938
Allowance for loan losses	(774)	(895)		(725)	(775)
Other Real Estate Loans [Member] | Real Estate 1 [Member]
Loans	233,067	219,553		224,903
Allowance for loan losses	$ (2,326)	(2,160)		$ (2,272)	$ (2,948)
Consumer and Other Loans [Member] | Consumer and Other Loans [Member]
Loans		$ 16,886
[1] Derived from audited consolidated financial statements.

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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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Amount after allowance and deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements and loans held for sale.

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