ACCRUED EXPENSES (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
ACCRUED EXPENSES
Salaries, wages and employee benefits	$ 8,523	$ 6,142
Federal and state tax accruals	1,215	2,649
Other	1,892	2,007
Total accrued expenses	$ 11,630	$ 10,798