Note 7 - Loans Receivable and Allowance for Loan Losses - Gross Loans by Major Category (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020
Loans receivable	$ 3,064,219	$ 2,754,394	$ 2,562,068	$ 2,514,123
Deferred costs (fees)	(3,367)	(3,711)	(4,901)	(6,758)
Allowance for credit losses	(25,255)	(20,997)	(23,156)	(18,964)	$ (17,218)	$ (16,110)	$ (12,975)
Net loans receivable	3,035,597	2,729,686	2,534,011	2,488,401
Commercial Real Estate Portfolio Segment [Member]
Loans receivable	915,494			780,311
Allowance for credit losses	(3,838)	(3,541)	(4,048)	(5,802)	(6,184)	(5,919)	(4,394)
Construction and Land Development Portfolio Segment [Member]
Loans receivable	226,627			216,008
Allowance for credit losses	(1,910)	(1,522)	(2,110)	(1,544)	(1,090)	(1,133)	(948)
Commercial Portfolio Segment [Member]
Loans receivable	303,518			252,376
Allowance for credit losses	(2,937)	(2,323)		(2,856)	(1,696)	(1,503)	(1,367)
Owner Occupied Real Estate [Member]
Loans receivable	557,496			526,570
Allowance for credit losses	(6,261)	(5,963)	(6,166)	(3,158)	(2,908)	(2,440)	(2,374)
Consumer Portfolio Segment [Member]
Loans receivable	95,618			83,487
Allowance for credit losses	(740)	(691)	(728)	(629)	(652)	(717)	(723)
Residential Portfolio Segment [Member]
Loans receivable	954,679			536,332
Allowance for credit losses	(9,569)	(6,957)	(5,620)	(4,922)	$ (4,552)	$ (4,270)	$ (3,025)
Paycheck Protection Program CARES Act [Member]
Loans receivable	$ 10,787			119,039
Allowance for credit losses		$ 0	$ 0	$ 0

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

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Amortized cost, before allowance for credit loss, fee, and loan in process, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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