Business Segments (Tables)

3 Months Ended

Mar. 31, 2016

Segment Reporting Measurement Disclosures [Abstract]

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

		Three Months Ended
		March 31,
		2016		2015
Net sales
	North America	$	82,372	$	83,002
	EMEA		47,649		43,185
	Asia/Pacific		41,512		45,000
	South America		6,544		10,143
Total net sales		$	178,077	$	181,330
Operating earnings, excluding indirect operating expenses
	North America	$	18,632	$	17,825
	EMEA		8,053		6,571
	Asia/Pacific		11,048		10,434
	South America		(315)		1,252
Total operating earnings, excluding indirect operating expenses			37,418		36,082
Indirect operating expenses			(16,407)		(16,591)
Amortization expense			(1,777)		(1,627)
Consolidated operating income			19,234		17,864
Other income (expense), net			706		(194)
Interest expense			(741)		(587)
Interest income			348		320
Consolidated income before taxes and equity in net income of associated companies		$	19,547	$	17,403