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PROPERTY AND EQUIPMENT - Depreciation expense recorded in continuing operations (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
PROPERTY AND EQUIPMENT        
Depreciation expense $ 7,188 $ 3,903 $ 20,369 $ 8,452