STOCKHOLDERS' DEFICIT - New Charter (Narrative) (Details) - $ / shares |
Dec. 31, 2018 |
Dec. 31, 2017 |
Jan. 26, 2017 |
---|---|---|---|
Class D Common Stock | |||
Class of Stock [Line Items] | |||
Shares authorized under New Charter (in shares) | 200,000,000 | 200,000,000 | 200,000,000 |
Par value of shares authorized under New Charter (in dollars per share) | $ 0.001 | $ 0.001 | $ 0.001 |
Preferred Stock | |||
Class of Stock [Line Items] | |||
Preferred stock authorized under New Charter (in shares) | 150,000,000 | ||
Par value of preferred stock authorized under New Charter (in dollars per share) | $ 0.001 |