Revenue Revenue (Tables)

6 Months Ended

Jun. 30, 2018

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue [Table Text Block]

The following table presents the Company’s disaggregated net sales by primary end market served (dollars in thousands):

	Three months ended June 30,				Six months ended June 30,
Customer End Markets	2018		2017		2018		2017
Consumer	$	71,990	$	66,780	$	136,720	$	125,660
Aerospace	45,620		47,580		91,430		93,000
Industrial	55,970		50,000		110,320		99,290
Oil and gas	51,330		49,010		103,540		95,250
Total net sales	$	224,910	$	213,370	$	442,010	$	413,200