Business Segments (Tables)

12 Months Ended

Dec. 31, 2018

Segment Disclosures [Abstract]

Schedule of Segment Reporting Information, by Segment [Table Text Block]

		2018		2017		2016
Segment assets
	North America (including Corporate)	$	317,934	$	324,260	$	321,404
	EMEA		157,111		177,267		147,021
	Asia/Pacific		212,545		196,891		200,218
	South America		22,075		23,708		23,385
	Total segment assets	$	709,665	$	722,126	$	692,028

		2018		2017		2016
Segment long-lived assets
	North America (including Corporate)	$	84,876	$	88,818	$	86,775
	EMEA		26,239		28,507		25,630
	Asia/Pacific		23,650		22,427		22,040
	South America		2,529		2,691		2,858
	Total segment long-lived assets	$	137,294	$	142,443	$	137,303

		2018		2017		2016
Capital expenditures
	North America (including Corporate)	$	4,574	$	3,919	$	2,918
	EMEA		2,081		3,936		3,263
	Asia/Pacific		6,059		2,458		3,269
	South America		172		559		504
	Total segment capital expenditures	$	12,886	$	10,872	$	9,954

		2018		2017		2016
Depreciation
	North America	$	5,770	$	5,791	$	5,672
	EMEA		3,434		3,368		3,323
	Asia/Pacific		2,552		2,669		2,765
	South America		440		649		672
	Total segment depreciation	$	12,196	$	12,477	$	12,432

		2018		2017		2016
Net sales
	North America	$	383,471	$	356,598	$	336,174
	EMEA		233,597		226,243		200,917
	Asia/Pacific		214,157		201,008		179,131
	South America		36,295		36,233		30,443
	Total net sales	$	867,520	$	820,082	$	746,665
		2018		2017		2016
Operating earnings, excluding indirect operating expenses
	North America	$	88,276	$	77,694	$	77,833
	EMEA		35,970		35,350		33,810
	Asia/Pacific		56,056		48,342		45,866
	South America		3,881		3,927		1,386
	Total operating earnings, excluding indirect operating expenses		184,183		165,313		158,895

Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]

		2018		2017		2016
Operating earnings, excluding indirect operating expenses
	North America	$	88,276	$	77,694	$	77,833
	EMEA		35,970		35,350		33,810
	Asia/Pacific		56,056		48,342		45,866
	South America		3,881		3,927		1,386
Total operating earnings, excluding indirect operating expenses			184,183		165,313		158,895
Non-operating charges			(72,223)		(65,142)		(65,316)
Restructuring and related activities			—		—		439
Combination-related expenses			(16,661)		(29,938)		(1,531)
Depreciation of corporate assets and amortization			(7,518)		(7,489)		(7,134)
Operating income			87,781		62,744		85,353
Other expense, net			(642)		(718)		(492)
Interest expense			(6,158)		(3,892)		(2,889)
Interest income			2,117		2,534		2,037
Income before taxes and equity in net income of
	associated companies	$	83,098	$	60,668	$	84,009