FAIR VALUE OF FINANCIAL INSTRUMENTS (Details) - USD ($) $ in Thousands |
Jun. 30, 2017 |
Dec. 31, 2016 |
|---|---|---|
| Fair Value of Financial Instruments [Line Items] | ||
| Long-term debt, carrying value | $ 86,528 | $ 82,068 |
| Senior secured notes | Senior Secured Notes | ||
| Fair Value of Financial Instruments [Line Items] | ||
| Long-term debt, carrying value | 1,839 | 1,830 |
| Senior secured notes | Senior Secured Notes | Level 2 | Market Approach | ||
| Fair Value of Financial Instruments [Line Items] | ||
| Long-term debt, estimated fair value | 1,242 | |
| Senior secured notes | Senior Secured Second Lien Notes | ||
| Fair Value of Financial Instruments [Line Items] | ||
| Long-term debt, carrying value | 84,689 | $ 80,238 |
| Senior secured notes | Senior Secured Second Lien Notes | Level 2 | Market Approach | ||
| Fair Value of Financial Instruments [Line Items] | ||
| Long-term debt, estimated fair value | $ 54,997 |