DETAIL OF SELECTED BALANCE SHEET ACCOUNTS - Property and Equipment (Details) - USD ($) $ in Thousands |
Jun. 30, 2017 |
Dec. 31, 2016 |
|---|---|---|
| Organization, Consolidation and Presentation of Financial Statements [Abstract] | ||
| Property and equipment | $ 105,278 | $ 104,203 |
| Less accumulated depreciation and amortization | (67,234) | (61,444) |
| Property and equipment, net | $ 38,044 | $ 42,759 |