ACCRUED LIABILITIES (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Payables and Accruals [Abstract]
Accrued payroll and employee benefits	$ 7,878	$ 7,949
Accrued property taxes	499	659
Accrued purchase orders	2,028	1,549
Accrued taxes	3,521	3,731
Other	3,934	4,167
Total accrued liabilities	$ 17,860	$ 18,055
Percentage of total current liabilities	5.00%