Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2014

Payables and Accruals [Abstract]

Schedule of accrued liabilities

Accrued liabilities at December 31, 2014 and 2013 consisted of the following:

	2014		2013
Accrued salaries, wages and benefits	$	4,925	$	3,604
Accrual for self-insurance liabilities	7,490		5,787
Property taxes	2,146		584
Sales tax	676		481
Other accrued expenses	566		959
	$	15,803	$	11,415