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EMPLOYEE SEVERANCE BENEFITS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Retirement Benefits [Abstract]
Minimum employment period for severance benefit eligibility, years	1 year
Percentage of liability for severance obligations deposited with pension fund	72.00%
Deposits into individual severance fund	$ 1,600
Unfunded liability for employee severance payments, period expense	87	$ 94	$ (142)
Total Liability for Employees' severance benefits	$ 174

X

- Definition

Minimum employment period for severance benefit eligibility.

+ References

No definition available.

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- Definition

For the non-management employees, the Parent deposits 72% of its liability for severance obligations with a pension fund for such employees, and upon completion of one year of employment with the Parent, it makes a one-time deposit with the pension fund for the remaining balance

+ References

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- Definition

Period expense (income) related to postemployment benefits.

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- Definition

Amount of liability, recognized in statement of financial position, for defined benefit pension plan. Excludes other postretirement benefit plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64852052&loc=d3e1703-114919

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 210
-Section S99
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-Subparagraph (SX 210.9-03(15))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4(b))
-URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747

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