Note 9 - Federal Income Taxes (Tables)

12 Months Ended

Dec. 31, 2025

Notes Tables

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

(Dollars in thousands)	2025		2024			2023
Current expense	$	12,655	$	19,090		$	22,518
Deferred expense (benefit)		2,085		(397	)		(2,036	)
Tax expense	$	14,740	$	18,693		$	20,482

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

(Dollars in thousands)	2025						2024						2023
	Amount			Percent			Amount			Percent			Amount			Percent
Tax at U.S. statutory rate	$	21,734			21.0	%	$	20,640			21.0	%	$	21,567			21.0	%
Tax credits net of proportional amortization and tax losses		(1,929	)		(1.9	)		(266	)		(0.3	)		24			0.0
Discount of purchased tax credits		(3,525	)		(3.4	)		0			NA			0			NA
Non-taxable or non-deductible items
Tax-exempt interest, net of interest expense disallowance		(1,265	)		(1.2	)		(1,027	)		(1.0	)		(862	)		(0.8	)
Bank owned life insurance		(683	)		(0.7	)		(529	)		(0.5	)		(303	)		(0.3	)
Non-deductible expenses		538			0.5			241			0.2			213			0.2
Other		(130	)		(0.1	)		(366	)		(0.4	)		(157	)		(0.2	)
Tax expense	$	14,740			14.2	%	$	18,693			19.0	%	$	20,482			19.9	%

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

(Dollars in thousands)	2025		2024
Deferred income tax assets
Allowance for credit losses	$	12,228	$	11,435
Deferred compensation		375		269
Stock compensation		977		1,011
Nonaccrual loan interest income		220		192
Unrealized loss on securities		6,379		13,245
Lease liability		792		928
Net operating loss carryforward		1,525		0
Other		850		567
Deferred tax asset		23,346		27,647
Deferred income tax liabilities
Depreciation		321		259
Prepaid expenses		780		685
Mortgage loan servicing rights		2,857		2,620
Deferred loan fees and costs		266		471
Right of use lease asset		792		928
Securities discount accretion		2,056		686
Business combination adjustments		4,849		1,626
Other		167		163
Deferred tax liability		12,088		7,438
Total net deferred tax asset	$	11,258	$	20,209