Net Sales and Revenue Recognition (Tables)

6 Months Ended

Jun. 30, 2018

Disaggregation Of Revenue [Abstract]

Disaggregation Of Revenue [Table Text Block]

	Three Months Ended June 30, 2018
	North						South		Consolidated
	America		EMEA		Asia/Pacific		America		Total
Net sales	$	97,392	$	60,166	$	55,348	$	9,056	$	221,962
Customer Industries
Primary metals	$	35,453	$	26,187	$	35,040	$	5,035	$	101,715
Metalworking		46,646		29,762		19,328		3,865		99,601
Coatings and other		15,293		4,217		980		156		20,646
	$	97,392	$	60,166	$	55,348	$	9,056	$	221,962
Timing of Revenue Recognized
Product sales at a point in time	$	94,562	$	60,110	$	53,017	$	8,987	$	216,676
Services transferred over time		2,830		56		2,331		69		5,286
	$	97,392	$	60,166	$	55,348	$	9,056	$	221,962

	Six Months Ended June 30, 2018
	North						South		Consolidated
	America		EMEA		Asia/Pacific		America		Total
Net sales	$	189,212	$	122,221	$	104,125	$	18,459	$	434,017
Customer Industries
Primary metals	$	76,726	$	53,504	$	65,918	$	10,334	$	206,482
Metalworking		83,520		60,923		36,901		7,648		188,992
Coatings and other		28,966		7,794		1,306		477		38,543
	$	189,212	$	122,221	$	104,125	$	18,459	$	434,017
Timing of Revenue Recognized
Product sales at a point in time	$	183,548	$	122,109	$	99,865	$	18,306	$	423,828
Services transferred over time		5,664		112		4,260		153		10,189
	$	189,212	$	122,221	$	104,125	$	18,459	$	434,017