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UNAUDITED SUPPLEMENTARY QUARTERLY INFORMATION (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 12 Months Ended
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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, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net loss | $ (12,313) | $ (8,245) | $ (10,441) | $ (8,865) | $ (71,609) | $ (5,345) | $ (4,060) | $ (1,203) | $ (8,628) | $ 3,682 | $ (75,018) | $ (6,671) | $ (39,413) | $ (82,217) | $ (86,635)
Loss per common share (in dollars per share) | $ (0.19) | $ (0.14) | $ (0.20) | $ (0.19) | $ (1.58) | $ (0.12) | $ (0.18) | $ (0.06) | $ (0.44) | $ 0.19 | $ (3.81) | $ (0.34) | $ (0.70) | $ (2.46) | $ (4.41)
Basic and diluted weighted average number of common shares outstanding (in shares) | 66,205,153,000 | 58,630,457,000 | 53,043,512,000 | 47,660,414,000 | 45,330,302,000 | 45,117,145,000 | 22,999,968,000 | 19,677,552,000 | 19,677,552 | 19,677,552 | 19,677,052 | 19,601,773 | 56,441,058 | 33,383,972 | 19,661,661

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- Definition Net Income or Loss Available to Common Stockholders plus adjustments resulting from the assumption that dilutive convertible securities were converted, options or warrants were exercised, or that other shares were issued upon the satisfaction of certain conditions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1505-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1377-109256 + Details
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