EMPLOYEE BENEFIT PLANS (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||
|---|---|---|---|---|
Sep. 30, 2016 |
Sep. 30, 2015 |
Sep. 30, 2016 |
Sep. 30, 2015 |
|
| EMPLOYEE BENEFIT PLANS | ||||
| Minimum age required to be eligible to participate in the 401(k) plan | 21 years | |||
| Expenses accrued relating to employer matching contributions | $ 462 | $ 361 | $ 1,436 | $ 1,017 |