ACCRUED EXPENSES (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
ACCRUED EXPENSES
Salaries, wages and employee benefits	$ 6,142	$ 3,668
Federal and state tax accruals	2,649	1,648
Other	2,007	1,202
Total accrued expenses	$ 10,798	$ 6,518