REVENUE, Contract Assets and Contract Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2018	Dec. 31, 2017
Contract with Customer, Asset and Liability [Abstract]
Contract assets - current (unbilled receivable)	$ 13,643	$ 0
Contract liabilities - current (deferred revenue)	1,829
Deferred revenue		900
Revenues	500
Revenue, remaining performance obligation	$ 17,400
ASU 2014-09 [Member]
Contract with Customer, Asset and Liability [Abstract]
Contract assets - current (unbilled receivable)		14,536
Contract liabilities - current (deferred revenue)		$ 855

No definition available.

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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 45
-Paragraph 1
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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current.

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Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

+ References

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Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

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