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Accrued Expenses - Schedule of Accrued Expenses (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Payables and Accruals [Abstract]    
Salaries and employee benefits $ 3,228 $ 2,988
Accrued sales, property and other tax 404 402
Interest payable 7 3
Insurance payable 710 630
Other 665 759
Total accrued expenses $ 5,014 $ 4,782