Quarterly report pursuant to Section 13 or 15(d)

PROPERTY, PLANT AND EQUIPMENT - Additional information (Details)

v3.21.2
PROPERTY, PLANT AND EQUIPMENT - Additional information (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Payments to Acquire Property, Plant, and Equipment [Abstract]        
Depreciation expense $ 495 $ 469 $ 985 $ 934