SUPPLEMENTAL CONSOLIDATED BALANCE SHEETS INFORMATION (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Warranty provision [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance, beginning	$ 338	$ 324	$ 251
Additions	154	216	294
Deductions	(186)	(202)	(221)
Balance, ending	306	338	324
Provision for doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance, beginning	302	331	125
Additions	361	112	206
Deductions	(40)	(141)
Balance, ending	$ 623	$ 302	$ 331

Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 4
-Subparagraph (SX 210.12-09)
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690

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Amount of increase in the allowances and reserves, which consist of the valuation and qualifying accounts that are either netted against the cost of an asset or that reflect a liability established to represent expected future costs, from charges to costs and expenses.

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Total of the deductions in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, representing receivables written off as uncollectible and portions of the reserves utilized, respectively.

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