STOCKHOLDERS' EQUITY - Warrants (Details) - USD ($) $ / shares in Units, $ in Millions |
6 Months Ended | |
|---|---|---|
Jun. 30, 2017 |
Jun. 24, 2016 |
|
| Class of Warrant or Right [Line Items] | ||
| Number of warrants expired unexercised (in shares) | 4,310 | |
| Warrant exercise price (usd per share) | $ 12.00 | |
| Exercise period of warrants | 30 days | |
| Senior Loan Facility | ||
| Class of Warrant or Right [Line Items] | ||
| Collateral assigned for accounts receivables | $ 25 | |
| Series A Warrants | ||
| Class of Warrant or Right [Line Items] | ||
| Warrant exercise price (usd per share) | $ 10.30 | |
| Warrants issued (in shares) | 154,376 | |
| Series B Warrants | ||
| Class of Warrant or Right [Line Items] | ||
| Warrant exercise price (usd per share) | $ 12.88 | |
| Warrants issued (in shares) | 154,376 |