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FAIR VALUE OF FINANCIAL INSTRUMENTS - Carrying Value and Estimated Fair Value (Details) - USD ($)
Jun. 30, 2020
Dec. 31, 2019
Carrying Value    
Carrying value and estimated fair value of financial instruments    
Cash and Cash Equivalents $ 1,227,059 $ 12,341,978
Long-Term Debt 69,507,464  
Estimated Fair Value    
Carrying value and estimated fair value of financial instruments    
Cash and Cash Equivalents 1,227,059 $ 12,341,978
Long-Term Debt $ 69,507,464