|
FINANCIAL INSTRUMENTS - Additional Information (Details) (USD $)
In Thousands, unless otherwise specified
|
12 Months Ended |
|
Dec. 31, 2014
|
Dec. 31, 2013
|
| Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |
|
|
| Unrealized loss |
|
$ 631 |
| Unrealized loss reported under change in fair value |
5,094 |
|
| Carrying value of notes payable to directors |
|
500 |
| Convertible Debt Warrants |
|
|
| Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |
|
|
| Estimated fair value of notes payable to directors |
|
886 |
| Senior secured notes | Investor |
|
|
| Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |
|
|
| Carrying value of notes payable |
150,000 |
80,688 |
| Estimated fair value of notes payable |
$ 93,375 |
$ 78,721 |