Business Segments (Tables)

9 Months Ended

Sep. 30, 2013

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,
		2013		2012		2013		2012
Net sales
	North America	$	79,602	$	78,690	$	231,111	$	236,079
	EMEA		44,452		43,376		140,314		131,353
	Asia Pacific		44,063		42,503		124,593		117,379
	South America		15,942		16,354		49,080		50,547
Total net sales		$	184,059	$	180,923	$	545,098	$	535,358
Operating earnings, excluding indirect operating expenses
	North America	$	15,203	$	13,650	$	46,238	$	44,959
	EMEA		6,781		5,554		22,332		19,604
	Asia Pacific		11,214		10,078		31,612		27,413
	South America		2,598		584		7,830		5,021
Total operating earnings, excluding indirect operating expenses			35,796		29,866		108,012		96,997
Indirect operating expenses			(16,131)		(13,185)		(49,380)		(45,166)
Amortization expense			(858)		(818)		(2,621)		(2,283)
Consolidated operating income			18,807		15,863		56,011		49,548
Other (expense) income, net			(685)		322		1,962		529
Interest expense			(717)		(1,034)		(2,223)		(3,359)
Interest income			267		149		665		409
Consolidated income before taxes and equity in net income of associated companies		$	17,672	$	15,300	$	56,415	$	47,127