Accrued Expenses

3 Months Ended

Mar. 31, 2012

Accrued Expenses

7. Accrued Expenses

Accrued expenses consisted of the following at March 31, 2012 and December 31, 2011 (in thousands):

	March 31, 2012		December 31, 2011
Salaries, wages, payroll taxes and benefits	$	38,601	$	58,692
Workers’ compensation liability		65,778		66,121
Property, sales, use and other taxes		12,591		11,850
Insurance, other than workers’ compensation		7,988		6,012
Accrued interest payable		8,429		4,937
Deferred revenue—current		6,944		7,229
2009 Performance Unit Awards		1,719		3,640
Other		10,392		6,148
	$	152,442	$	164,629

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. 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 will be recognized as pressure pumping revenue over the remaining term of the pricing agreements. Deferred revenue of approximately $1.8 million and $2.9 million was recognized in the three months ended March 31, 2012 and 2011, respectively, related to these pricing agreements.