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EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ 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, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Earnings Per Share Reconciliation [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net (loss) income available to common shareholders | $ (523) | $ (964) | $ (519) | $ (1,944) | $ (1,410) | $ (1,587) | $ (1,497) | $ 12,858 | $ (3,950) | $ 8,364 | $ (18,214)
Derivative liability - warrants |  |  |  |  |  |  |  |  | (64) | (1,799) | 0
Accretion on convertible preferred stock |  |  |  |  |  |  |  |  | 0 | 222 | 0
Numerator for dilutive (loss) income per common share |  |  |  |  |  |  |  |  | $ (4,014) | $ 6,787 | $ (18,214)
Dilutive Securities, Effect on Basic Earnings Per Share [Abstract] |  |  |  |  |  |  |  |  |  |  |
Weighted average shares used to compute basic income (loss) per common share (in shares) |  |  |  |  |  |  |  |  | 27,433 | 24,333 | 17,756
Derivative liability - warrants (in shares) |  |  |  |  |  |  |  |  | 16 | 28 | 0
Convertible preferred stock (in shares) |  |  |  |  |  |  |  |  | 0 | 3,137 | 0
Stock options (in shares) |  |  |  |  |  |  |  |  | 0 | 249 | 0
Denominator for diluted income (loss) per common share (in shares) |  |  |  |  |  |  |  |  | 27,449 | 27,747 | 17,756
Earnings Per Share, Basic and Diluted [Abstract] |  |  |  |  |  |  |  |  |  |  |
Income (loss) per basic share (in dollars per share) | $ (0.02) | $ (0.04) | $ (0.02) | $ (0.07) | $ (0.05) | $ (0.06) | $ (0.06) | $ 0.69 | $ (0.14) | $ 0.34 | $ (1.03)
Diluted (loss) income per common share (in dollars per share) |  |  |  |  |  |  |  |  | $ (0.15) | $ 0.24 | $ (1.03)

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- Definition The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting 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 -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 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=65016374&loc=d3e4984-109258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64863997&loc=d3e1252-109256 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 + Details
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