Accrued Expenses

9 Months Ended

Sep. 30, 2011

8. Accrued Expenses

Accrued expenses consisted of the following at September 30, 2011 and December 31, 2010 (in thousands):


	September 30, 2011		December 31, 2010
Salaries, wages, payroll taxes and benefits	$	37,425	$	39,866
Workers’ compensation liability		65,935		63,011
Property, sales, use and other taxes		13,763		6,682
Insurance, other than workers’ compensation		6,018		12,648
Accrued interest payable		8,609		4,879
Deferred revenue – current		7,229		10,220
2009 Performance Unit Awards		4,563		—
Other		8,759		10,009

	$	152,301	$	147,315

Deferred revenue was recorded in the fourth quarter of 2010 in the purchase price allocation associated with the Company’s acquisition of a pressure pumping business as discussed in Note 3. The deferred revenue relates to out-of-market pricing agreements that were in place at the acquired business at the time of the acquisition. The deferred revenue is recognized as pressure pumping revenue over the remaining term of the pricing agreements. Deferred revenue of approximately $1.8 million and $6.6 million was recognized in the three and nine months ended September 30, 2011, respectively, related to these pricing agreements.