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STOCKHOLDERS' EQUITY - Stock Options (Details) - USD ($) $ in Millions |  | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Oct. 01, 2019 | Dec. 31, 2019 | Oct. 01, 2019 | Sep. 30, 2019 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Stock-based compensation |  |  |  |  |  |  |
Financial Designation, Predecessor and Successor [Fixed List] | Predecessor | Successor | Predecessor | Predecessor |  | Predecessor | Predecessor
2016 Incentive Plan | Stock options |  |  |  |  |  |  |
Stock-based compensation |  |  |  |  |  |  |
Vesting period |  |  |  |  | 3 years |  |
Expiration term |  |  |  |  | 10 years |  |
Proceeds from exercise of stock options |  |  |  |  |  | $ 0.3 |
Unrecognized compensation expense stock option |  |  |  |  |  | $ 5.2 | $ 13.0
Weighted average remaining vesting period |  |  |  |  |  | 10 months 24 days | 1 year 2 months 12 days
Weighted average grant date fair value of the shares granted |  |  |  |  |  | $ 3.5 | $ 7.8

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