Accrued Liabilities (Tables)

3 Months Ended

Mar. 31, 2013

Accounts Payable and Accrued Liabilities, Current [Abstract]

Accrued Liabilities

Accrued liabilities consisted of the following:

	March 31, 2013		December 31, 2012
	(In thousands)
Interest payable	17,338		6,568
Employee costs	14,599		24,632
Lease operating expenses	10,316		10,903
Taxes	5,433		7,308
Hedge settlements	—		160
Other	5,638		4,527
Total accrued liabilities	$	53,324	$	54,098