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QUARTERLY FINANCIAL DATA (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Oil and gas sales |  | $ 81 |  | $ 1,867 |  | $ 1,996 |  | $ 1,066 |  | $ 1,710 |  | $ 2,622 |  | $ 3,285 |  | $ 2,679 |  | $ 4,689 | $ 9,047 | $ 28,331
Operating expenses: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Impairment of oil and gas properties |  |  |  |  |  | (2,611) |  | (6,957) |  | (13,782) |  | (21,446) |  | (3,208) |  | (19,240) |  | 9,568 | 57,676 |
Other | [1] | 276 |  | (2,761) |  | (3,061) |  | (2,561) |  | (4,710) |  | (5,534) |  | (5,266) |  | (6,174) |  |  |  |
Operating income (loss) |  | 1,093 | [1] | (894) | [1] | (3,676) | [1] | (8,452) | [1] | (16,782) | [1] | (24,358) | [1] | (5,189) | [1] | (22,735) | [1] | (11,929) | (69,064) | 620
Income (loss) from continuing operations |  | 107 | [1] | (265) | [1] | (4,206) | [1] | (8,275) | [1] | (16,038) | [1] | (22,785) | [1] | (5,542) | [1] | (22,919) | [1] | (11,672) | (67,284) | 1,017
Discontinued operations |  | (111) |  |  |  | (10) |  | (2,327) |  | (23,224) |  | (866) |  | (738) |  | (784) |  | (2,448) | (25,612) | (3,108)
Net income (loss) |  | $ 963 |  | $ (265) |  | $ (4,216) |  | $ (10,602) |  | $ (39,262) |  | $ (23,651) |  | $ (6,280) |  | $ (23,703) |  | $ (14,120) | $ (92,896) | $ (2,091)
Income (loss) per share - basic: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Continuing operations (in dollars per share) |  | $ 0.23 | [1],[2] | $ (0.06) | [1],[2] | $ (0.89) | [1],[2] | $ (1.76) | [1],[2] | $ (3.42) | [1],[2] | $ (4.87) | [1],[2] | $ (1.19) | [1],[2] | $ (4.90) | [1],[2] | $ (2.50) | $ (14.38) | $ 0.04
Discontinued operations (in dollars per share) |  |  | [1],[2] |  | [1],[2] | (0.00) | [1],[2] | (0.49) | [1],[2] | (4.96) | [1],[2] | (0.19) | [1],[2] | (0.16) | [1],[2] | (0.17) | [1],[2] | (0.51) | (5.48) | (0.12)
Total (in dollars per share) |  | 0.23 |  | (0.06) |  | (0.89) |  | (2.25) |  | (8.38) |  | (5.06) |  | (1.34) |  | (5.07) |  | $ (3.01) | $ (19.86) | $ (0.08)
Income (loss) per share - diluted: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Continuing operations (in dollars per share) | [1],[2] | 0.23 |  | (0.06) |  | (0.89) |  | (1.76) |  | (3.42) |  | (4.87) |  | (1.19) |  | (4.90) |  |  |  |
Discontinued operations (in dollars per share) | [1],[2] |  |  |  |  | (0.00) |  | (0.49) |  | (4.96) |  | (0.19) |  | (0.16) |  | (0.17) |  |  |  |
Total (in dollars per share) |  | $ 0.23 |  | $ (0.06) |  | $ (0.89) |  | $ (2.25) |  | $ (8.38) |  | $ (5.06) |  | $ (1.35) |  | $ (5.07) |  |  |  |
Weighted average shares outstanding: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic (in shares) |  | 4,768,013 |  | 4,768,000 |  | 4,705,000 |  | 4,705,500 |  | 4,685,167 |  | 4,675,167 |  | 4,674,667 |  | 4,674,667 |  | 4,768,013 | 4,677,500 | 4,638,833
Diluted (in shares) |  | 4,768,013 | [1] | 4,768,000 | [1] | 4,705,000 | [1] | 4,705,500 | [1] | 4,685,167 | [1] | 4,675,167 | [1] | 4,674,667 | [1] | 4,674,666 | [1] | 4,768,013 | 4,677,500 | 4,683,167
[1] | Amounts have been restated from amounts reported in previous reports to retroactively present the impact of Discontinued Operations as discuss further in Note 6.
[2] | Earnings per share amounts may not sum due to rounding.

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- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=64863997&loc=d3e1448-109256 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Weighted-Average Number of Common Shares Outstanding -URI http://asc.fasb.org/extlink&oid=6528421 + Details
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