ACCRUED LIABILITIES - (Tables)

3 Months Ended

Mar. 31, 2013

Payables and Accruals [Abstract]

Summary of accrued liabilities

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

	March 31, 2013		December 31, 2012
Accrued insurance reserves	$	9,294	$	9,816
Accrued materials	8,507		5,745
Accrued compensation and benefits	5,520		7,381
Accrued property, sales and other taxes	3,941		4,632
Accrued rent	1,920		1,904
Accrued professional fees	999		863
Other	5,143		6,089
	$	35,324	$	36,430