SEGMENT INFORMATION - General Information (Details) $ in Millions	9 Months Ended
Sep. 30, 2017 segment	Jul. 19, 2017 USD ($)
Reportable segment results
Number of reportable segments \| segment	2
Series A-1 Preferred Interests \| Alliance Minerals \| Kodiak
Reportable segment results
Investment in affiliate \| $		$ 100

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration