Accrued Liabilities (Tables)

6 Months Ended

Jun. 30, 2013

Accounts Payable and Accrued Liabilities, Current [Abstract]

Accrued Liabilities

Accrued liabilities consisted of the following:

	June 30, 2013		December 31, 2012
	(In thousands)
Employee costs	$	19,269	$	24,632
Lease operating expenses	12,612		10,903
Taxes	9,507		7,308
Interest payable	7,024		6,568
Other	10,420		4,687
Total accrued liabilities	$	58,832	$	54,098