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COMMITMENTS AND CONTINGENCIES - Legal Proceedings (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($) product
Commitments and contingencies
Accrued loss contingencies | $	$ 20
TCCC
Commitments and contingencies
Voting interest (as a percent)	18.80%
Number of energy products developed | product	3

X

- Definition

Number of energy products developed that it believes it may market under the exception.

+ References

No definition available.

+ Details

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X

- Definition

Percentage of voting equity interests acquired at the acquisition date in the business combination.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=79982066&loc=d3e1392-128463

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X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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X

- Definition

Amount of loss contingency liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349

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Balance Type:	credit
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- Details

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