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SHARE-BASED PAYMENTS - Schedule of Share-based Compensation, Stock Options and Restricted Stock Units Activity (Details) - $ / shares | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Stock-option |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward] |  |  |
Number of nonvested shares, beginning of period (in shares) | 177,698 | 139,600 | 0
Granted, nonvested, number of shares (in shares) | 449,537 | 2,176,330 | 307,250
Vested, number of shares (in shares) | (331,482) | (2,119,803) | (153,625)
Nonvested options forfeited, number of shares (in shares) | (68,575) | (18,429) | (14,025)
Number of nonvested shares, end of period (in shares) | 227,178 | 177,698 | 139,600
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] |  |  |
Nonvested, weighted average grant date fair value, beginning of period (in dollars per share) | $ 3.44 | $ 5.27 | $ 0.00
Granted, nonvested, weighted average grant date fair value (in dollars per share) | 1.29 | 1.93 | 5.27
Vested, weighted average grant date fair value (in dollars per share) | 2.26 | 2.00 | 5.27
Nonvested options forfeited, weighted average grant date fair value (in dollars per share) | 1.56 | 5.17 | 5.27
Nonvested, weighted average grant date fair value, end of period (in dollars per share) | $ 1.48 | $ 3.44 | $ 5.27
RSU |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares [Roll Forward] |  |  |
Number of nonvested shares, beginning of period (in shares) | 272,866 | 0 | 0
Granted, nonvested, number of shares (in shares) | 1,205,336 | 282,716 | 0
Vested, number of shares (in shares) | (138,608) | 0 | 0
Nonvested options forfeited, number of shares (in shares) | (9,125) | (9,850) | 0
Number of nonvested shares, end of period (in shares) | 1,330,469 | 272,866 | 0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] |  |  |
Nonvested, weighted average grant date fair value, beginning of period (in dollars per share) | $ 4.03 | $ 0.00 | $ 0.00
Granted, nonvested, weighted average grant date fair value (in dollars per share) | 2.14 | 4.05 | 0.00
Vested, weighted average grant date fair value (in dollars per share) | 4.65 | 0.00 | 0.00
Nonvested options forfeited, weighted average grant date fair value (in dollars per share) | 5.39 | 4.68 | 0.00
Nonvested, weighted average grant date fair value, end of period (in dollars per share) | $ 2.37 | $ 4.03 | $ 0.00

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