SUMMARY OF SIGNIFICANT ACCOUNTING AND BUSINESS POLICIES - Variable Interest Entity (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Risks and Uncertainties [Abstract]
Ownership percentage in VIE	47.50%
Assets of VIE	$ 5,400
Increase (decrease) in cost of sales from consolidation of the VIE	(700)	$ 600
Income tax benefit of VIE	$ 46	$ 200
Employees
Risks and Uncertainties [Abstract]
Ownership percentage in VIE	52.50%
Fixed Assets
Risks and Uncertainties [Abstract]
Assets of VIE	$ 4,500

Amount of income tax expense (benefit) related to variable interest entity pertaining to continuing operations.

No definition available.

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- Definition

The increase (decrease) cost of sales recognized from consolidation of variable interest entity (VIE).

+ References

No definition available.

+ Details

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- References

No definition available.

+ Details

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- Definition

The carrying amount of the consolidated Variable Interest Entity's assets included in the reporting entity's statement of financial position.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (bb)
-URI http://asc.fasb.org/extlink&oid=108788376&loc=d3e5710-111685

+ Details

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- Definition

Percentage of the Variable Interest Entity's (VIE) voting interest owned by (or beneficial interest in) the reporting entity (directly or indirectly).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 5A
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=108788376&loc=SL6759159-111685

+ Details

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- Details

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- Details

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