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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, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Dec. 31, 2019
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 |  |  | 706,774 |  | 296,450
Share-based Payment Arrangement, Expense | $ 670 | $ 710 | $ 2,370 | $ 2,500 |
R S U Weighted |  |  |  |  |
Number of Shares |  |  |  |  |
Number of nonvested shares, beginning of period (in shares) |  |  | 1,315,536 |  |
Granted, nonvested, number of shares (in shares) |  |  | 740,998 |  |
Vested, number of shares (in shares) |  |  | (746,477) |  |
Nonvested options forfeited, number of shares (in shares) |  |  | (146,980) |  |
Number of nonvested shares, end of period (in shares) | 1,163,077 |  | 1,163,077 |  | 1,315,536
Weighted Average Grant Date Fair Value |  |  |  |  |
Nonvested, weighted average grant date fair value, beginning of period (in dollars per share) |  |  | $ 2.45 |  |
Granted, nonvested, weighted average grant date fair value (in dollars per share) |  |  | 1.66 |  |
Vested, weighted average grant date fair value (in dollars per share) |  |  | 2.46 |  |
Nonvested options forfeited, weighted average grant date fair value (in dollars per share) |  |  | 2.15 |  |
Nonvested, weighted average grant date fair value, end of period (in dollars per share) | $ 1.99 |  | $ 1.99 |  | $ 2.45
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 |  |  | 740,000 | 720,000 |

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- Definition Amount of expense for award under share-based payment arrangement. Excludes amount capitalized. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5047-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -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=115993241&loc=d3e301413-122809 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -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=116856206&loc=d3e5070-113901 + Details
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