v3.19.2
SIGNIFICANT ACCOUNTING POLICIES - Borrowings (Details)
Dec. 31, 2017
USD ($)
Revolving Credit Facility  
Debt Instrument [Line Items]  
Revolving credit facility $ 15,000,000
Loan Agreement | 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
Note payable to Squadron | Loan Agreement  
Debt Instrument [Line Items]  
Long-term debt $ 20,000,000