Note 2 - INVESTMENT SECURITIES - Securities in a Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Securities available for sale:
Securities available for sale, less than 12 months, fair value	$ 217,675	$ 32,980
Securities available for sale, less than 12 months, gross unrealized losses	(19,954)	(464)
Securities available for sale, 12 months or more, fair value	26,044	23,442
Securities available for sale, 12 months or more, gross unrealized losses	(2,916)	(857)
Securities available for sale, fair value	243,719	56,422
Securities available for sale, gross unrealized losses	(22,870)	(1,321)
Municipal securities.
Securities held to maturity:
Securities held to maturity, less than 12 months, fair value	87,662	1,049
Securities held to maturity, less than 12 months, gross unrealized losses	(3,095)	(1)
Securities held to maturity, fair value	87,662	1,049
Securities held to maturity, gross unrealized losses	(3,095)	(1)
Securities available for sale:
Securities available for sale, less than 12 months, fair value	139,706	13,287
Securities available for sale, less than 12 months, gross unrealized losses	(17,719)	(211)
Securities available for sale, 12 months or more, fair value	4,914	1,001
Securities available for sale, 12 months or more, gross unrealized losses	(561)	(4)
Securities available for sale, fair value	144,620	14,288
Securities available for sale, gross unrealized losses	(18,280)	(215)
U.S. treasuries and govt. sponsored agency securities
Securities available for sale:
Securities available for sale, less than 12 months, fair value	13,725	9,802
Securities available for sale, less than 12 months, gross unrealized losses	(850)	(156)
Securities available for sale, 12 months or more, fair value	2,675	3,035
Securities available for sale, 12 months or more, gross unrealized losses	(462)	(140)
Securities available for sale, fair value	16,400	12,837
Securities available for sale, gross unrealized losses	(1,312)	(296)
Residential mortgage-backed and related securities
Securities available for sale:
Securities available for sale, less than 12 months, fair value	40,124	5,363
Securities available for sale, less than 12 months, gross unrealized losses	(869)	(67)
Securities available for sale, 12 months or more, fair value	18,455	19,406
Securities available for sale, 12 months or more, gross unrealized losses	(1,893)	(713)
Securities available for sale, fair value	58,579	24,769
Securities available for sale, gross unrealized losses	(2,762)	(780)
Asset-backed securities
Securities available for sale:
Securities available for sale, less than 12 months, fair value	10,853	4,528
Securities available for sale, less than 12 months, gross unrealized losses	(76)	(30)
Securities available for sale, fair value	10,853	4,528
Securities available for sale, gross unrealized losses	(76)	$ (30)
Other Securities
Securities available for sale:
Securities available for sale, less than 12 months, fair value	13,267
Securities available for sale, less than 12 months, gross unrealized losses	(440)
Securities available for sale, fair value	13,267
Securities available for sale, gross unrealized losses	$ (440)

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