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COMMITMENTS AND CONTINGENCIES (Details) - USD ($)
$ in Millions
Feb. 28, 2019
Sep. 30, 2020
Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]      
Warranty reserve   $ 0.6 $ 0.3
Litigation settlement, amount $ 6.8    
Unconditional annual minimum inventory purchases   $ 27.8