INCOME TAXES (Tables)

12 Months Ended

Dec. 31, 2018

Income Tax Disclosure [Abstract]

Schedule of Income Before Income Tax Expense

Income before income tax expense consists of the following (in thousands):

	2018		2017		2016
U.S. operations	$	67,240	$	62,609	$	107,803
Foreign operations	30,911		15,983		19,735
Total	$	98,151	$	78,592	$	127,538

Schedule of Income (Benefit) Tax Expense

Income tax expense (benefit) is comprised of the following (in thousands):

	2018			2017			2016
Current:
Federal	$	4,276		$	11,712		$	11,980
State	2,101			2,404			2,840
Foreign	13,673			3,918			4,588
Total current	20,050			18,034			19,408
Deferred:
Federal	6,297			(20,595		)	23,814
State	908			2,541			2,347
Foreign	(2,359		)	(1,580		)	(145		)
Total deferred	4,846			(19,634		)	26,016
Income tax expense (benefit)	$	24,896		$	(1,600	)	$	45,424

Schedule of Tax Effects of Temporary Differences that Give Rise to the Deferred Tax Assets and Liabilities

The following table sets forth the tax effects of temporary differences that give rise to the deferred tax assets and liabilities (in thousands):

	December 31, 2018			December 31, 2017
Deferred tax assets
Accounts receivable, principally due to allowance for doubtful accounts	$	(32	)	$	858
Inventories	5,939			5,939
Net operating loss carryforwards	6,898			7,460
Accrued pension	2,121			5,591
Stock-based compensation	3,722			2,972
Compensation-related accruals	696			3,063
Warranty	2,055			1,779
Obligation for post-employment benefits other than pension	935			1,312
Accrued liabilities and other items	8,350			3,886
Gross deferred tax assets	30,684			32,860
Valuation allowance	(4,789		)	(4,789		)
Net deferred tax assets	25,895			28,071
Deferred tax liabilities:
Intangibles	(85,553		)	(58,701		)
Plant and equipment	(26,839		)	(24,041		)
Gross deferred tax liabilities	(112,392		)	(82,742		)
Net deferred tax liabilities	$	(86,497	)	$	(54,671	)

Schedule of Reconciliation of Statutory Federal Income Tax Rate to the Effective Income Tax Rate

The following table sets forth a reconciliation of the statutory federal income tax rate to the effective income tax rate:

	2018		2017		2016
Federal statutory tax rate	21.0	%	35.0	%	35.0	%
Increase (decrease) in the tax rate resulting from:
State taxes, net of federal effect	2.4	%	5.2	%	3.3	%
Effect of tax rates of other countries	0.5	%	(1.8	)%	(1.4	)%
Section 199 deduction	—	%	(0.7	)%	(0.8	)%
Change in contingency reserve	—	%	—	%	(0.2	)%
Limitation on deduction of officer’s compensation	0.4	%	1.3	%	0.6	%
Tax Act	(3.2	)%	(33.9	)%	—	%
Valuation allowance release	—	%	(3.3	)%	—	%
Other	4.3	%	(3.8	)%	(0.9	)%
Effective tax rate	25.4	%	(2.0	)%	35.6	%

Summarizes the Activity Related to the Entity's Unrecognized Tax Benefits

The following table summarizes the activity related to the Company's unrecognized tax benefits during 2018, 2017, and 2016 (in thousands):

	2018			2017			2016
Balance, beginning of the year	$	875		$	875		$	4,407
Additions for tax position related to the current year	125			125			125
Additions for tax position related to the prior year	—			—			56
Decreases for tax position related to the prior year	—			—			(250		)
Prior year reductions:
Lapse of statute of limitations	(125		)	(125		)	(125		)
Settlements	—			—			(3,338		)
Balance, end of the year	$	875		$	875		$	875