Additional Balance Sheet Detail

3 Months Ended

Mar. 31, 2014

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Additional Balance Sheet Detail

Additional Balance Sheet Detail

The following table summarizes components of selected balance sheet accounts as of the dates presented:

	As of
	March 31,		December 31,
	2014		2013
Other current assets:
Tubular inventory and well materials	$	1,965	$	2,271
Prepaid expenses	3,407		3,653
	$	5,372	$	5,924
Other assets:
Debt issuance costs	$	29,227	$	30,239
Assets of supplemental employee retirement plan (“SERP”)	3,815		3,734
Other	668		562
	$	33,710	$	34,535
Accounts payable and accrued liabilities:
Trade accounts payable	$	75,235	$	120,278
Drilling and other lease operating costs	62,620		51,529
Royalties	41,860		39,929
Production and franchise taxes	1,929		5,338
Compensation - related	7,951		8,584
Interest	37,833		15,718
Preferred stock dividends	1,722		1,725
Other	9,062		4,903
	$	238,212	$	248,004
Other liabilities:
Deferred gain on sale of assets	$	10,095	$	—
Firm transportation obligation	12,964		13,245
Asset retirement obligations (“AROs”)	6,537		6,437
Defined benefit pension obligations	1,523		1,579
Postretirement health care benefit obligations	1,071		1,023
Deferred compensation - SERP obligations and other	4,089		3,883
Other	8,766		7,219
	$	45,045	$	33,386