Annual report pursuant to Section 13 and 15(d)

PROPERTY AND EQUIPMENT - Narrative (Details)

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PROPERTY AND EQUIPMENT - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Property, Plant and Equipment [Abstract]      
Depreciation expense $ 3.7 $ 1.6 $ 1.0