Accrued Liabilities (Tables)

9 Months Ended

Sep. 30, 2014

Payables and Accruals [Abstract]

Components of accrued liabilities

Accrued liabilities consist of the following (in thousands):

	September 30, 2014		December 31, 2013
Payroll and vacation	$	19,240	$	16,634
Accrued payroll taxes	5,320		2,453
Accrued real estate and personal property taxes	6,531		3,658
Accrued purchase price due to sellers	—		10,895
Sales tax payable	4,889		6,379
Other	14,100		11,037
	$	50,080	$	51,056