Major Customers (Tables)

6 Months Ended

Jun. 30, 2018

Revenue, Net [Abstract]

Schedule of Major Customers

The following table presents sales revenue for the above-mentioned customers for the three and six months ended June 30, 2018 and 2017:

	Three Months Ended				Six Months Ended
	June 30,				June 30,
	2018		2017		2018		2017
Navistar product sales	$	12,866,000	$	9,919,000	$	23,817,000	$	19,175,000
Navistar tooling sales	12,000		60,000		12,000		78,000
Total Navistar sales	12,878,000		9,979,000		23,829,000		19,253,000
Volvo product sales	11,988,000		7,548,000		22,185,000		12,783,000
Volvo tooling sales	43,000		7,548,000		43,000		7,579,000
Total Volvo sales	12,031,000		15,096,000		22,228,000		20,362,000
PACCAR product sales	8,537,000		6,391,000		15,300,000		11,852,000
PACCAR tooling sales	2,860,000		2,692,000		6,063,000		2,882,000
Total PACCAR sales	11,397,000		9,083,000		21,363,000		14,734,000
UFP product sales	8,450,000		—		14,049,000		—
UFP tooling sales	—		—		—		—
Total UFP sales	8,450,000		—		14,049,000		—
Other product sales	23,384,000		12,936,000		49,586,000		29,320,000
Other tooling sales	461,000		274,000		592,000		445,000
Total other sales	23,845,000		13,210,000		50,178,000		29,765,000
Total product sales	65,225,000		36,794,000		124,937,000		73,130,000
Total tooling sales	3,376,000		10,574,000		6,710,000		10,984,000
Total sales	$	68,601,000	$	47,368,000	$	131,647,000	$	84,114,000