Note 2 - Investment Securities - Summary of Continuous Unrealized Loss Position for Securities Classified as AFS (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Less than 12 Months, Fair Value	$ 30,685	$ 25,544
Less than 12 Months, Unrealized Losses	(217)	(361)
12 Months or More, Fair Value	265,528	282,120
12 Months or More, Unrealized Losses	(46,197)	(61,309)
Fair Value	296,213	307,664
Unrealized Losses	(46,414)	(61,670)
US Government Corporations and Agencies Securities [Member]
Less than 12 Months, Fair Value	5,669	5,505
Less than 12 Months, Unrealized Losses	(18)	(20)
12 Months or More, Fair Value	3,017	4,012
12 Months or More, Unrealized Losses	(195)	(305)
Fair Value	8,686	9,517
Unrealized Losses	(213)	(325)
US States and Political Subdivisions Debt Securities [Member]
Less than 12 Months, Fair Value	0	3,434
Less than 12 Months, Unrealized Losses	0	(99)
12 Months or More, Fair Value	14,330	12,686
12 Months or More, Unrealized Losses	(1,497)	(2,144)
Fair Value	14,330	16,120
Unrealized Losses	(1,497)	(2,243)
Corporate Debt Securities [Member]
Less than 12 Months, Fair Value	3,169	1,947
Less than 12 Months, Unrealized Losses	(32)	(5)
12 Months or More, Fair Value	14,196	24,326
12 Months or More, Unrealized Losses	(1,303)	(2,508)
Fair Value	17,365	26,273
Unrealized Losses	(1,335)	(2,513)
Residential Mortgage-Backed Securities [Member]
Less than 12 Months, Fair Value	11,982	5,432
Less than 12 Months, Unrealized Losses	(97)	(103)
12 Months or More, Fair Value	192,175	198,803
12 Months or More, Unrealized Losses	(36,089)	(47,440)
Fair Value	204,157	204,235
Unrealized Losses	(36,186)	(47,543)
Commercial Mortgage-Backed Securities [Member]
Less than 12 Months, Fair Value	9,865	9,226
Less than 12 Months, Unrealized Losses	(70)	(134)
12 Months or More, Fair Value	41,810	42,293
12 Months or More, Unrealized Losses	(7,113)	(8,912)
Fair Value	51,675	51,519
Unrealized Losses	$ (7,183)	$ (9,046)

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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