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FINANCIAL INSTRUMENTS - Significant Unobservable Input Information (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Changes in fair value of the Company's asset and liability measured on a recurring basis using significant unobservable inputs (Level 3)    
Fair value assets amount transfer from level 1 to level 2 $ 0.0 $ 0.0
Fair value assets amount transfer from level 2 to level 1 0.0 0.0
Fair value liabilities amount transfer from level 1 to level 2 0.0 0.0
Fair value liabilities amount transfer from level 2 to level 1 $ 0.0 $ 0.0