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Accrued Expenses - Schedule of Accrued Expenses (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Payables and Accruals [Abstract]    
Salaries and employee benefits $ 4,203 $ 3,908
Accrued sales, property and other tax 589 793
Interest payable 50 17
Insurance payable 1,145 935
Other 394 465
Total accrued expenses $ 6,381 $ 6,118