INCOME TAXES - Income tax loss carryforward (Details) |
12 Months Ended |
|---|---|
|
Dec. 31, 2015
USD ($)
| |
| Minimum | |
| Income tax loss carryforward | |
| Period of limitations on use | 1 year |
| Maximum | |
| Income tax loss carryforward | |
| Period of limitations on use | 20 years |
| Federal | |
| Income tax loss carryforward | |
| Income tax loss carryforward | $ 542,102,000 |
| State | |
| Income tax loss carryforward | |
| Income tax loss carryforward | $ 321,105,000 |