ACCRUED LIABILITIES - (Tables)

12 Months Ended

Dec. 31, 2012

Payables and Accruals [Abstract]

Summary of accrued liabilities

A summary of accrued liabilities is as follows (in thousands):

	December 31, 2012		December 31, 2011
Accrued insurance reserves	$	9,816	$	10,649
Accrued compensation and benefits	7,381		4,496
Accrued materials	5,745		4,907
Accrued property, sales and other taxes	4,632		4,251
Accrued rent	1,904		1,933
Accrued interest	547		664
Other	6,405		4,333
	$	36,430	$	31,233