v3.10.0.1
SIGNIFICANT ACCOUNTING POLICIES - Borrowings (Details) - USD ($)
Sep. 30, 2018
Dec. 31, 2017
Debt Instrument [Line Items]    
Long-term debt $ 25,394,000 $ 25,452,000
Revolving Credit Facility    
Debt Instrument [Line Items]    
Revolving credit facility   15,000,000
Note payable to Squadron    
Debt Instrument [Line Items]    
Long-term debt $ 20,000,000 $ 20,000,000