Business Segments (Tables)

9 Months Ended

Sep. 30, 2014

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,
		2014		2013		2014		2013
Net sales
	North America	$	87,909	$	79,602	$	247,137	$	231,111
	EMEA		49,352		44,452		148,769		140,314
	Asia/Pacific		49,601		44,063		136,661		124,593
	South America		12,005		15,942		39,260		49,080
Total net sales		$	198,867	$	184,059	$	571,827	$	545,098
Operating earnings, excluding indirect operating expenses
	North America	$	17,771	$	15,203	$	51,350	$	46,238
	EMEA		8,589		6,781		24,794		22,332
	Asia/Pacific		11,925		11,214		32,064		31,612
	South America		883		2,598		3,281		7,830
Total operating earnings, excluding indirect operating expenses			39,168		35,796		111,489		108,012
Indirect operating expenses			(17,489)		(16,131)		(47,864)		(49,380)
Amortization expense			(1,126)		(858)		(2,754)		(2,621)
Consolidated operating income			20,553		18,807		60,871		56,011
Other income (expense), net			914		(685)		558		1,962
Interest expense			(641)		(717)		(1,747)		(2,223)
Interest income			642		267		1,990		665
Consolidated income before taxes and equity in net income of associated companies		$	21,468	$	17,672	$	61,672	$	56,415