Taxes on Income and Uncertain Positions (Tables)

12 Months Ended

Dec. 31, 2018

Taxes on Income and Uncertain Tax Positions [Abstract]

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

			2018		2017		2016
Current:
	Federal	$	6,583	$	21,265	$	4,680
	State		(1,844)		2,529		518
	Foreign		12,114		14,105		12,540
			16,853		37,899		17,738
Deferred:
	Federal		7,859		6,889		4,601
	State		(173)		(36)		104
	Foreign		511		(3,099)		783
Total		$	25,050	$	41,653	$	23,226

Schedule of Income before Income Tax, Domestic and Foreign [Table Text Block]

		2018		2017		2016
U.S.	$	27,387	$	10,468	$	31,175
Foreign		55,711		50,200		52,834
Total	$	83,098	$	60,668	$	84,009

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

		2018		2017
Retirement benefits	$	3,532	$	5,472
Allowance for doubtful accounts		1,160		1,134
Insurance and litigation reserves		396		497
Postretirement benefits		896		1,056
Supplemental retirement benefits		2,862		2,679
Performance incentives		4,347		3,779
Equity-based compensation		753		1,071
Insurance settlement		4,374		4,581
Operating loss carryforward		8,434		8,602
Foreign tax credit and other credits		1,929		3,043
Uncertain tax positions		(400)		(410)
Other		2,645		2,816
		30,928		34,320
Valuation allowance		(7,520)		(7,401)
Total deferred tax assets, net	$	23,408	$	26,919
Depreciation		4,049		4,444
Foreign pension and other		1,062		1,295
Amortization and other		13,497		15,373
Unremitted Earnings		7,857		—
Total deferred tax liabilities	$	26,465	$	21,112

Schedule of Deferred Income Tax Assets Valuation Allowance [Table Text Block]

								Effect of
		Balance at		Additional		Allowance		Exchange		Balance
		Beginning		Valuation		Utilization		Rate		at End
		of Period		Allowance		and Other		Changes		of Period
Valuation Allowance
Year ended December 31, 2018	$	7,401	$	650	$	(471)	$	(60)	$	7,520
Year ended December 31, 2017	$	6,344	$	1,127	$	(61)	$	(9)	$	7,401
Year ended December 31, 2016	$	6,259	$	294	$	(187)	$	(22)	$	6,344

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

		2018		2017		2016
Income tax provision at the Federal statutory tax rate	$	17,458	$	21,229	$	29,403
Unremitted Earnings		7,857		—		—
Transition Tax		(3,118)		18,388		—
Revaluation of U.S. deferred tax assets and liabilities		—		4,470		—
Global intangible low taxed income		1,211		—		—
Foreign derived intangible income		(1,034)		—		—
Non-deductible acquisition expenses		1,019		4,779		696
Share-based compensation		259		(1,419)		—
Differences in tax rates on foreign earnings and remittances		1,081		(2,663)		(2,862)
Foreign dividends		—		—		2,939
Excess foreign tax credit utilization		—		(2,761)		(5,493)
Research and development activities credit utilization		(230)		(235)		(238)
Uncertain tax positions		(79)		(651)		(833)
U.S. domestic production activities deduction		—		(1,155)		(875)
State income tax provisions, net		196		569		357
Non-deductible entertainment and business meals expense		415		248		238
Miscellaneous items, net		15		854		(106)
Taxes on income before equity in net income of associated companies	$	25,050	$	41,653	$	23,226

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

			2018		2017		2016
Unrecognized tax benefits as of January 1		$	6,761	$	6,240	$	11,032
	Decrease in unrecognized tax benefits taken in prior periods		(183)		(308)		(869)
	Increase in unrecognized tax benefits taken in current period		2,023		2,347		1,921
	Decrease in unrecognized tax benefits due to lapse of statute of limitations		(1,292)		(2,116)		(5,744)
	(Decrease) increase due to foreign exchange rates		(259)		598		(100)
Unrecognized tax benefits as of December 31		$	7,050	$	6,761	$	6,240

Schedule Of Deferred Tax Assets And Liabilities Balance Sheet Classification [Table Text Block]

	2018		2017
Non-current deferred tax assets	$	6,946	$	15,460
Non-current deferred tax liabilities		10,003		9,653
Net deferred tax (liability) asset	$	(3,057)	$	5,807