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EMPLOYEE STOCK COMPENSATION - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions |  | 12 Months Ended
--- | --- | ---
Aug. 21, 2012 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
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 | 0
2018 Omnibus Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Maximum number of shares available for awards (shares)Arrangement by Share-based Payment Award, Number of Shares Authorized |  | 4,417,882 |  |
2013 Omnibus Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Common stock available for future awards |  | 4,346,189 |  |

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- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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