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EMPLOYEE STOCK COMPENSATION - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions |  |  | 12 Months Ended
--- | --- | --- | ---
Jul. 16, 2013 | Aug. 21, 2012 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Stock option awards | Minimum |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Award vesting period |  |  | 3 years |  |
Award expiration period |  |  | 7 years |  |
Stock option awards | Maximum |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Award vesting period |  |  | 5 years |  |
Award expiration period |  |  | 10 years |  |
Restricted stock awards and restricted stock units | Minimum |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Award vesting period |  |  | 1 year |  |
Restricted stock awards and restricted stock units | Maximum |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Award vesting period |  |  | 5 years |  |
Initial SAR | Chief Executive Officer |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Award vesting period |  | 2 years |  |  |
Award expiration period |  | 10 years |  |  |
SARs granted (in shares) |  | 500,000 |  |  |
Base price per share (in dollars per share) |  | $ 12.12 |  |  |
Initial SAR | Tranche One | Chief Executive Officer |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Percentage of vesting award rights |  | 33.33% |  |  |
Performance based restricted stock | Chief Executive Officer |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Aggregate grant date fair value market value |  |  | $ 5.0 |  |
Stock appreciation rights |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
SARs granted (in shares) |  |  | 0 | 0 | 2,973
2013 Omnibus Plan |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |
Common stock shares authorized percentage under the plan | 20.00% |  |  |  |
Minimum requirement of number of shares authorized | 2,384,711 |  |  |  |
Common stock available under new plan |  |  | 1,277,247 |  |

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