COMMITMENTS AND CONTINGENCIES (Details) - USD ($)	3 Months Ended	12 Months Ended
Mar. 31, 2017	Dec. 31, 2018
Commitments and contingencies
Environmental Remediation Expense	$ 1,500,000
Brazil
Commitments and contingencies
Environmental Remediation Expense	$ 1,500,000	$ 0
Brazil \| Reduction of gross receipts tax
Commitments and contingencies
Estimated potential recoveries		16,100,000
Recovery of part of claim		631,000
Brazil \| Minimum
Commitments and contingencies
Environmental Loss Contingencies Estimate		1,500,000
Brazil \| Maximum
Commitments and contingencies
Environmental Loss Contingencies Estimate		3,000,000
Indemnification agreements
Commitments and contingencies
Liabilities recorded under indemnification agreements		$ 0

The amount of liabilities recorded as of the balance sheet date under indemnification agreements.

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- Definition

The charge against earnings in the period for known or estimated future costs arising from requirements to perform environmental remediation activities.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 30
-Section 45
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=109237650&loc=d3e13064-110858

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Amount of gain recognized in the period that had been disclosed in prior periods as a contingent gain.

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-Publisher FASB
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The amount or range of possible amounts of gain that could be realized upon the resolution of a contingency.

+ References

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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.

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Reflects the estimated amount of loss from the specified contingency as of the balance sheet date.

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