Note 8 - Employee Benefit Plans - Defined Benefit Plan Activity (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2024	Dec. 31, 2023
Actuarial (gain) loss (3)		$ (842)	$ 1,542
Fair value of plan assets at beginning of year		32,509
Fair value of plan assets at end of year		39,208	32,509
Pension Plan [Member]
Projected benefit obligation at beginning of year		25,750	23,128
Service cost (1)	[1]	1,042	813
Interest cost (2)	[2]	1,206	1,091
Actuarial (gain) loss (3)	[3]	(842)	1,542
Benefits paid		(1,096)	(824)
Projected benefit obligation at end of year		26,060	25,750
Fair value of plan assets at beginning of year		32,509	29,746
Actual return on plan assets		4,795	3,587
Employer contribution		3,000	0
Benefits paid		(1,096)	(824)
Fair value of plan assets at end of year		39,208	32,509
Funded status at the end of the year		13,148	6,759
Deferred tax liabilities		(2,761)	(1,419)
Other assets		13,148	6,759
Total amounts recognized in the Consolidated Balance Sheet		10,387	5,340
Net loss (gain)		415	(2,924)
Deferred tax (liability) asset		(87)	614
Amount recognized		328	(2,310)
Benefit obligation		(26,060)	(25,750)
Fair value of assets		39,208	32,509
Unrecognized net actuarial (gain) loss		(415)	2,924
Deferred tax liability		(2,674)	(2,033)
Prepaid benefit cost included in other assets		10,059	7,650
Expected return on plan assets	[2]	(2,431)	(2,070)
Recognized net actuarial loss	[2]	134	69
Net periodic benefit cost		(49)	(97)
Net gain		(3,339)	(44)
Deferred income tax expense		701	9
Total recognized		(2,638)	(35)
Total recognized in net periodic benefit cost and other comprehensive income		$ (3,388)	$ (141)
Discount rate used for net periodic pension cost		4.75%	5.00%
Discount rate used for disclosure		5.50%	4.75%
Expected return on plan assets		7.50%	7.50%
Rate of compensation increase		4.00%	3.00%

[1] Cost is included in salaries and employee benefits expense on the Consolidated Statements of Income.

[2] Cost is included in other operating expense on the Consolidated Statements of Income.

[3] Please see table below for detail on the components of actuarial (gain) loss.