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SENIOR DEBT - Schedule of Debt (Details) - Senior Unsecured Term Notes, September 2014 - Senior Unsecured Term Notes - USD ($)
Sep. 30, 2020
Dec. 31, 2019
Sep. 30, 2014
Debt Instrument [Line Items]      
Principal $ 95,000,000 $ 95,000,000 $ 95,000,000
Unamortized Debt Issuance Costs $ 491,000 $ 584,000  
Fixed Interest Rate 6.50%