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ASSETS HELD FOR SALE (Details) $ in Thousands			3 Months Ended
	Jun. 30, 2019 USD ($)	May 05, 2019 USD ($) item	Mar. 31, 2019 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Deposit for sale of assets			$ 500
Royalty interests sold | item		4
Disposal Group, Held-for-sale, Not Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Deposit for sale of assets		$ 500
Total cash consideration of disposal		2,750
Cash proceed	$ 2,250
Borrowings		$ 2,000
Carrying value of assets held for sale			$ 1,600

X

- Definition

Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	debit
Period Type:	instant

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- 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

The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585

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- Definition

The carrying amount on the books of the entity of the asset to be sold.

+ References

No definition available.

+ Details

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- Definition

Borrowing amount classified as assets attributable to disposal group held for sale or disposed of.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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- Definition

Represents the number of royalty interests.

+ References

No definition available.

+ Details

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Balance Type:	na
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- Definition

The cash inflow from disposal of mineral properties and promissory note.

+ References

No definition available.

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