v3.8.0.1
DEBT AND CREDIT ARRANGEMENTS - Schedule of Long-term Debt (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Debt Instrument [Line Items]    
Long-term Debt $ 25,452 $ 17,538
Current portion of long-term debt with affiliate 113 107
Total long-term liabilities 25,339 17,431
Note payable to Squadron    
Debt Instrument [Line Items]    
Long-term Debt 20,000 11,401
Revolving credit facility with Squadron | Revolving Credit Facility    
Debt Instrument [Line Items]    
Long-term Debt 3,921 4,500
Mortgage payable to affiliate    
Debt Instrument [Line Items]    
Long-term Debt 1,531 1,637
Current portion of long-term debt with affiliate $ 113 $ 107