Accrued Liabilities (Tables)

3 Months Ended

Mar. 31, 2018

Payables and Accruals [Abstract]

Schedule of accrued liabilities

Accrued liabilities at March 31, 2018 and December 31, 2017 consisted of the following:

	March 31, 2018		December 31, 2017
Accrued salaries, wages and benefits	$	7,676	$	9,632
Accrual for insurance liabilities	5,259		5,233
Property taxes	640		513
Sales taxes	1,813		1,836
Interest	23		46
Other accrued expenses	231		613
Total accrued liabilities	$	15,642	$	17,873