Components of Selected Balance Sheet Accounts (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013		Dec. 31, 2012
Other current assets:
Tubular inventory and well materials	$ 2,271		$ 4,033
Prepaid expenses	3,653		562
Prepaid Expense and Other Assets, Current, Total	5,924		4,595
Other assets:
Debt issuance costs	30,239		13,186
Assets of supplemental employee retirement plan ("SERP")	3,734	[1]	3,237	[1]
Other	562		1,511
Other assets	34,535		17,934
Accounts payable and accrued liabilities:
Trade accounts payable	120,278		37,835
Drilling and other lease operating costs	51,529		37,703
Royalties	39,929		14,390
Production and franchise taxes	5,338		2,874
Compensation - related	8,584	[2],[3]	6,853	[2],[3]
Interest	15,718		5,828
Preferred stock dividends	1,725		1,687
Other	4,903		4,485
Accounts payable and accrued liabilities	248,004		111,655
Other liabilities:
Firm transportation obligation	13,245		14,333
Asset retirement obligations	6,437		4,513
Defined benefit pension obligations	1,579	[2]	1,821	[2]
Postretirement health care benefit obligations	1,023	[2]	2,634	[2]
Deferred compensation - SERP obligation and other	3,883	[1]	3,310	[1]
Other	7,219		2,290
Other liabilities	$ 33,386		$ 28,901

[1] s the assets and liabilities of the Penn Virginia Corporation Supplemental Employee Retirement Plan (“SERP”) which is a nonqualified supplemental employee retirement savings plan. Assets of the SERP are held in a Rabbi Trust. Shares of our common stock held by the Rabbi Trust are presented for financial reporting purposes as treasury stock carried at cost.

[2] Includes the combined unfunded benefit obligations under our defined benefit pension and postretirement health care plans of $3.0 million and $5.1 million as of December 31, 2013 and 2012. The expense recognized with respect to these plans was $0.3 million, $0.3 million and $0.4 million for the years ended December 31, 2013, 2012 and 2011, respectively.

[3] Includes employer matching obligations under our defined contribution retirement plan of $0.2 million and $0.2 million as of December 31, 2013 and 2012, respectively. The expense recognized with respect to this plan was $1.0 million, $0.9 million and $1.2 million for the years ended December 31, 2013, 2012 and 2011, respectively.