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PROPERTY AND EQUIPMENT, NET (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Property, Plant and Equipment [Abstract]      
Depreciation $ 12.9 $ 15.0 $ 13.4
Additional equipment purchased $ 7.2 $ 11.3 $ 20.1