Quarterly report pursuant to Section 13 or 15(d)

LONG-TERM DEBT - Long-Term Debt (Details)

v3.19.2
LONG-TERM DEBT - Long-Term Debt (Details) - USD ($)
Jun. 30, 2019
Dec. 31, 2018
Feb. 02, 2018
Debt Instrument [Line Items]      
Unamortized discounts and debt issuance costs $ (4,389,000) $ (3,806,000)  
Long-term debt, net 104,086,000 95,194,000  
Current portion of long-term debt (1,100,000) (1,000,000)  
Long-term debt, net of current portion, unamortized discount and issuance costs 102,986,000 94,194,000  
Senior Secured Notes Due 2024 | Senior Secured Notes      
Debt Instrument [Line Items]      
Outstanding principal $ 108,475,000 $ 99,000,000 $ 100,000,000