Business Segments (Tables)

6 Months Ended

Jun. 30, 2017

Segment Reporting Measurement Disclosures [Abstract]

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

		Three Months Ended				Six Months Ended
		June 30,				June 30,
		2017		2016		2017		2016
Net sales
	North America	$	90,331	$	83,088	$	177,672	$	165,460
	EMEA		54,507		53,108		108,434		100,757
	Asia/Pacific		47,724		43,151		92,874		84,663
	South America		8,621		7,568		17,112		14,112
Total net sales		$	201,183	$	186,915	$	396,092	$	364,992
Operating earnings, excluding indirect operating expenses
	North America	$	19,621	$	20,255	$	40,258	$	38,937
	EMEA		8,217		8,936		17,463		17,045
	Asia/Pacific		11,812		11,080		22,055		22,128
	South America		1,064		338		1,861		23
Total operating earnings, excluding indirect operating expenses			40,714		40,609		81,637		78,133
Combination-related expenses			(4,338)		—		(13,413)		—
Nonoperating charges			(16,642)		(16,096)		(32,959)		(32,005)
Amortization expense			(1,831)		(1,812)		(3,604)		(3,589)
Consolidated operating income			17,903		22,701		31,661		42,539
Other expense, net			(1,571)		(337)		(1,676)		(235)
Interest expense			(780)		(727)		(1,436)		(1,468)
Interest income			540		545		1,063		893
Consolidated income before taxes and equity in net income of
	associated companies	$	16,092	$	22,182	$	29,612	$	41,729