Accrued Liabilities (Tables)

3 Months Ended

Mar. 31, 2013

Payables and Accruals [Abstract]

Schedule of accrued liabilities

Accrued liabilities at March 31, 2013 and December 31, 2012 consisted of the following:

	March 31, 2013		December 31, 2012
Accrued salaries, wages and benefits	$	3,311	$	3,552
Accrual for self-insurance liabilities	3,442		3,806
Property taxes	924		2,458
Other accrued expenses	2,742		2,640
	$	10,419	$	12,456