Note 6 - Loans Receivable and Allowance for Loan Losses - Gross Loans by Major Categories (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Loans receivable	$ 1,378,763	$ 1,162,049
Deferred costs (fees)	25	229
Allowance for loan losses	(8,084)	(8,599)
Net loans receivable	1,370,704	1,153,679
Commercial Real Estate Portfolio Segment [Member]
Loans receivable	495,529	433,304
Construction and Land Development Portfolio Segment [Member]
Loans receivable	125,512	104,617
Commercial Portfolio Segment [Member]
Loans receivable	195,493	173,343
Owner Occupied Real Estate [Member]
Loans receivable	358,956	309,838
Consumer Portfolio Segment [Member]
Loans receivable	86,897	76,183
Residential Portfolio Segment [Member]
Loans receivable	$ 116,376	$ 64,764

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 of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts for loans and leases covered under loss sharing agreements.

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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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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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