LONG-TERM DEBT - Carrying Value (Details) - USD ($)
$ in Thousands
Sep. 30, 2021
Dec. 31, 2020
LONG-TERM DEBT    
Current Face Amount $ 191,500  
Financing Costs, net of accumulated amortization (1,305)  
Total Long-Term Debt - Face Value 190,195 $ 106,809
Deferred financing costs-net $ 461 $ 650