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BASIS OF PRESENTATION AND CERTAIN SIGNIFICANT ACCOUNTING POLICIES, Fair Value of Financial Instruments (Details) - USD ($)
6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Fair Value of Financial Instruments [Abstract]    
Transfers from Level 1 to Level 2 $ 0 $ 0
Transfers from Level 2 to Level 1 0 0
Transfers into (out of) Level 3 $ 0 $ 0