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COMMITMENTS AND CONTINGENCIES (Details) | Jul. 22, 2016 USD ($) | Dec. 31, 2016 case lawsuit
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Pending Litigation | Securities Lawsuits |  |
COMMITMENTS AND CONTINGENCIES |  |
Number of purported class action lawsuits that have been filed |  | 2
Number of cases that have been filed | case |  | 3
Settled Litigation | Stockholder Derivatives Lawsuits |  |
COMMITMENTS AND CONTINGENCIES |  |
Number of cases that have been filed |  | 4
Settled Litigation | Stockholder Derivatives Lawsuits Filed In Superior Court Of California |  |
COMMITMENTS AND CONTINGENCIES |  |
Number of cases that have been filed |  | 2
Settled Litigation | Stockholder Derivatives Lawsuits Filed In California District Court |  |
COMMITMENTS AND CONTINGENCIES |  |
Number of cases that have been filed |  | 2
Insurance Claims | Settled Litigation | Stockholder Derivatives Lawsuits |  |
COMMITMENTS AND CONTINGENCIES |  |
Settlement amount | $ | $ 950,000 |

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