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PROPERTY AND EQUIPMENT - Narrative (Details) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Property, Plant and Equipment [Abstract]          
Depreciation expense $ 13 $ 64 $ 85 $ 122 $ 219