Net Sales and Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2018

Disaggregation Of Revenue [Abstract]

Disaggregation Of Revenue [Table Text Block]

	Three Months Ended March 31, 2018
	North						South		Consolidated
	America		EMEA		Asia/Pacific		America		Total
Net sales	$	91,820	$	62,055	$	48,777	$	9,403	$	212,055
Customer Industries
Primary metals	$	41,273	$	27,317	$	30,878	$	5,299	$	104,767
Metalworking		36,874		31,161		17,573		3,783		89,391
Coatings and other		13,673		3,577		326		321		17,897
	$	91,820	$	62,055	$	48,777	$	9,403	$	212,055
Timing of Revenue Recognized
Product sales at a point in time	$	88,986	$	61,999	$	46,848	$	9,319	$	207,152
Services transferred over time		2,834		56		1,929		84		4,903
	$	91,820	$	62,055	$	48,777	$	9,403	$	212,055