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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 | 12 Months Ended
--- | --- | ---
Mar. 31, 2018 | Mar. 31, 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 | $ 1,200 | $ 1,040 |
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) | 0 |  |
Number of nonvested shares, end of period (in shares) | 1,614,483 |  | 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) | 0.00 |  |
Nonvested, weighted average grant date fair value, end of period (in dollars per share) | $ 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 | 1,130,000 |

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