NOTES PAYABLE - Equipment Note Payable (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended 1 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2014
Nov. 18, 2014
Short-term Debt [Line Items]        
Payments of notes payable $ 99,659 $ 800    
Notes Payable | Equipment Note Payable        
Short-term Debt [Line Items]        
Debt, face amount       1,838
Stated interest rate       8.00%
Payments of notes payable     184  
Monthly principal and interest payments     $ 144