Note 11 - Income Taxes (Tables)

12 Months Ended

Dec. 31, 2023

Notes Tables

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

	Year ended December 31
	2023			2022			2021
Current:
Federal	$	(2,854	)	$	10,515		$	4,246
State		804			1,505			(1,967	)
		(2,050	)		12,020			2,279
Deferred:
Federal		7,709			(2,187	)		1,874
State		(148	)		(1,081	)		(256	)
		7,561			(3,268	)		1,618
	$	5,511		$	8,752		$	3,897

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

	2023			2022			2021
Federal income tax expense at statutory rate	$	6,139		$	9,946		$	7,264
State taxes, net of federal benefit		762			1,445			(1,329	)
Valuation allowance		(67	)		(1,202	)		(101	)
Change in uncertain tax positions, net		225			356			(705	)
Research and development credit		(1,012	)		(1,333	)		(859	)
Investment tax credit		(682	)		-			-
State rate change		92			(168	)		(652	)
Other		54			(292	)		279
	$	5,511		$	8,752		$	3,897

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

	December 31,
	2023			2022
Deferred tax assets:
Allowance for doubtful accounts	$	413		$	341
Inventory reserves		1,468			1,367
Warranty liability		1,690			1,856
Deferred compensation		2,124			2,349
Earnout liabilities		-			245
Pension and retiree health benefit obligations		1,225			1,344
Accrued vacation		1,137			1,278
Research expenditures		5,842			3,711
Operating lease liabilities		4,730			4,648
Net operating losses		1,663			2,126
Other accrued liabilities		4,376			4,301
State credit carryforwards		1,032			-
Other		404			990
Valuation allowance		(2,005	)		(2,071	)
Total deferred tax assets		24,099			22,485
Deferred tax liabilities:
Interest rate swaps		(994	)		(1,729	)
Tax deductible goodwill and other intangibles		(35,974	)		(35,492	)
Accelerated depreciation		(9,924	)		(10,225	)
Operating leases - right of use assets		(4,430	)		(4,288	)
Other		(680	)		(588	)
Total deferred tax liabilities		(52,002	)		(52,322	)
Net deferred tax liabilities	$	(27,903	)	$	(29,837	)

Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]

	2023			2022			2021
Balance at beginning of year	$	1,519		$	1,214		$	1,954
Increases for tax positions taken in the current year		277			350			311
Decreases due to settlements with taxing authorities		-			-			(991	)
Decreases due to lapses in the statute of limitations		(95	)		(45	)		(60	)
Balance at the end of year	$	1,701		$	1,519		$	1,214