Business Segments (Tables)

9 Months Ended

Sep. 30, 2017

Segment Reporting Measurement Disclosures [Abstract]

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

		Three Months Ended				Nine Months Ended
		September 30,				September 30,
		2017		2016		2017		2016
Net sales
	North America	$	90,450	$	86,126	$	268,122	$	251,586
	EMEA		58,775		49,825		167,209		150,582
	Asia/Pacific		54,200		45,892		147,074		130,555
	South America		9,493		8,585		26,605		22,697
Total net sales		$	212,918	$	190,428	$	609,010	$	555,420
Operating earnings, excluding indirect operating expenses
	North America	$	18,888	$	20,397	$	59,146	$	59,334
	EMEA		8,862		8,340		26,325		25,385
	Asia/Pacific		13,963		11,737		36,018		33,865
	South America		965		680		2,826		703
Total operating earnings, excluding indirect operating expenses			42,678		41,154		124,315		119,287
Combination-related expenses			(9,675)		(1,157)		(23,088)		(1,157)
Nonoperating charges			(17,108)		(16,404)		(50,067)		(48,409)
Amortization expense			(1,886)		(1,730)		(5,490)		(5,319)
Consolidated operating income			14,009		21,863		45,670		64,402
Other income (expense), net			249		(10)		(1,427)		(245)
Interest expense			(793)		(758)		(2,229)		(2,226)
Interest income			762		551		1,825		1,444
Consolidated income before taxes and equity in net income of
	associated companies	$	14,227	$	21,646	$	43,839	$	63,375