ACCOUNTS AND UNBILLED RECEIVABLES (Details) - USD ($) $ in Thousands |
Dec. 31, 2015 |
Dec. 31, 2014 |
|---|---|---|
| ACCOUNTS AND UNBILLED RECEIVABLES | ||
| Accounts receivable | $ 34,834 | $ 29,000 |
| Unbilled Receivables | 14,562 | 12,014 |
| Receivables from related parties | 88 | 134 |
| Accounts and unbilled receivables, Total | $ 49,484 | $ 41,148 |