Income Taxes (Tables)

12 Months Ended

Dec. 31, 2018

Income Taxes

Schedule of components of provision for income tax expense (benefit)

	Year ended December 31
	2018		2017		2016
Current:
Federal	$	3,953	$	11,897	$	16,664
State		1,736		988		1,866
		5,689		12,885		18,530
Deferred:
Federal		5,001		(17,264)		4,930
State		1,164		1,970		1,227
		6,165		(15,294)		6,157
	$	11,854	$	(2,409)	$	24,687

Schedule of reconciliation of income tax expense computed at the federal statutory rate to the provision for income taxes

	2018		2017		2016
Federal income tax expense at statutory rate	$	11,709	$	18,520	$	22,294
State taxes, net of federal benefit		2,349		1,539		2,547
Change in uncertain tax positions, net		(1,292)		1,043		50
Research and development credit		(226)		(160)		(274)
State rate change		287		240		64
Manufacturing tax benefits		-		(933)		(1,248)
Prior period adjustments		-		-		1,096
Federal deferred rate change		(836)		(22,452)		-
Other		(137)		(206)		158
	$	11,854	$	(2,409)	$	24,687

Schedule of significant components of deferred tax liabilities and assets

	December 31,
	2018		2017
Deferred tax assets:
Allowance for doubtful accounts	$	212	$	259
Inventory reserves		1,353		967
Warranty liability		1,559		1,421
Deferred compensation		1,264		781
Earnout liabilities		516		694
Pension and retiree health benefit obligations		1,219		3,242
Accrued vacation		702		656
Medical claims reserve		78		189
State net operating losses		4,416		3,386
Other accrued liabilities		2,176		2,092
Valuation allowance		(1,473)		(777)
Total deferred tax assets		12,022		12,910
Deferred tax liabilities:
Tax deductible goodwill and other intangibles		(53,565)		(47,163)
Accelerated depreciation		(6,547)		(5,084)
Other		(108)		68
Total deferred tax liabilities		(60,220)		(52,179)
Net deferred tax liabilities	$	(48,198)	$	(39,269)

Schedule of reconciliation of the beginning and ending liability for uncertain tax positions

	2018		2017		2016
Balance at beginning of year	$	3,531	$	2,361	$	490
Increases for tax positions taken in the current year		21		97		73
Increases for tax positions taken in the prior years		146		1,602		1,809
Decreases due to settlements with taxing authorities		(693)		(8)		(11)
Decreases due to lapses in the statute of limitations		(1,210)		(521)		-
Balance at the end of year	$	1,795	$	3,531	$	2,361