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SHARE-BASED PAYMENTS - Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017 | Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures |  |  | 422,956 |  | 738,893
Allocated Share-based Compensation Expense | $ 520 | $ 830 | $ 2,240 | $ 2,617 |
R S U Weighted |  |  |  |  |
Number of shares |  |  |  |  |
Number of nonvested shares, beginning of period (in shares) |  |  | 1,909,477 |  |
Granted, nonvested, number of shares (in shares) |  |  | 1,191,132 |  |
Vested, number of shares (in shares) |  |  | (1,486,126) |  |
Nonvested options forfeited, number of shares (in shares) |  |  | (34,296) |  |
Number of nonvested shares, end of period (in shares) | 1,580,187 |  | 1,580,187 |  | 1,909,477
Weighted Average Grant- Date Fair Value |  |  |  |  |
Nonvested, weighted average grant date fair value, beginning of period (in dollars per share) |  |  | $ 2.17 |  |
Granted, nonvested, weighted average grant date fair value (in dollars per share) |  |  | 1.70 |  |
Vested, weighted average grant date fair value (in dollars per share) |  |  | 2.24 |  |
Nonvested options forfeited, weighted average grant date fair value (in dollars per share) |  |  | 2.00 |  |
Nonvested, weighted average grant date fair value, end of period (in dollars per share) | $ 1.99 |  | $ 1.99 |  | $ 2.17
Restricted Stock Units (RSUs) |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures |  |  | 1,190,000 | 1,390,000 |

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- Definition Share-based Compensation Arrangement by Share-based Payment Award, Granted, Nonvested, Weighted Average Grant Date Fair Value + References No definition available. + Details
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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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- Definition Net number of share options (or share units) granted during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(1) -URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901 + Details
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