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REVENUE - Net sales by market (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Total Net Sales by Market	$ 28,165	$ 26,447
Noncash Consideration
Total Net Sales by Market	775	1,025
Product/Service Transferred Over Time
Total Net Sales by Market	26,738	24,049
Product Transferred at Point in Time
Total Net Sales by Market	652	1,373
Aerospace and Defense
Total Net Sales by Market	4,245	4,866
Aerospace and Defense | Noncash Consideration
Total Net Sales by Market	122	195
Aerospace and Defense | Product/Service Transferred Over Time
Total Net Sales by Market	4,103	4,623
Aerospace and Defense | Product Transferred at Point in Time
Total Net Sales by Market	20	48
Medical
Total Net Sales by Market	14,939	10,321
Medical | Noncash Consideration
Total Net Sales by Market	409	405
Medical | Product/Service Transferred Over Time
Total Net Sales by Market	14,495	9,434
Medical | Product Transferred at Point in Time
Total Net Sales by Market	35	482
Industrial
Total Net Sales by Market	8,981	11,260
Industrial | Noncash Consideration
Total Net Sales by Market	244	425
Industrial | Product/Service Transferred Over Time
Total Net Sales by Market	8,140	9,992
Industrial | Product Transferred at Point in Time
Total Net Sales by Market	$ 597	$ 843

X

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 32
-Paragraph 2A
-URI http://asc.fasb.org/extlink&oid=82859839&loc=SL82860478-203043

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130543-203045

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130539-203045

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=82913847&loc=SL49130545-203045

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