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SUBSEQUENT EVENTS (Details Narrative) $ in Thousands	3 Months Ended									12 Months Ended
	Mar. 31, 2016 USD ($) $ / Unit	Dec. 31, 2015 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Sep. 30, 2014 USD ($)	Jun. 30, 2014 USD ($)	Mar. 31, 2014 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Feb. 29, 2016 USD ($)
Subsequent Event [Line Items]
Impairment charges		$ (13,782)	$ (21,446)	$ (3,208)	$ (19,240)					$ 57,676		$ 5,828
Subsequent Event [Member]
Subsequent Event [Line Items]
Issuance cost	$ 2
Weighted average oil price (in dollars per unit) | $ / Unit	46.00
Subsequent Event [Member] | Minimum [Member]
Subsequent Event [Line Items]
Impairment charges	$ 3
Subsequent Event [Member] | Maximum [Member]
Subsequent Event [Line Items]
Impairment charges	$ 4
Subsequent Event [Member] | Mining Segment [Member]
Subsequent Event [Line Items]
Preferred stock liquidation preference													$ 2

X

- Definition

The average consolidated production costs (lifting costs) per unit of production. Costs may include costs incurred to operate and maintain wells and equipment and to pay production taxes.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1204
-Paragraph (b)
-Subparagraph (2)

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X

- Definition

Amount of debt issuance costs (for example, but not limited to, legal, accounting, broker, and regulatory fees).

+ References

No definition available.

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X

- Definition

The expense recorded to reduce the value of oil and gas assets consisting of proved properties and unproved properties as the estimate of future successful production from these properties is reduced.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=51719941&loc=d3e2921-110230

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 932
-SubTopic 360
-Section 35
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=28370743&loc=d3e66150-109466

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

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- Definition

Value of the difference between preference in liquidation and the par or stated values of the preferred shares.

+ References

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- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

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