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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

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- 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) + Details
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- 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 + Details
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