Components of Selected Balance Sheet Accounts (Detail) - USD ($) $ in Thousands	Sep. 30, 2016		Dec. 31, 2015
Other current assets:
Tubular inventory and well materials	$ 2,154		$ 2,878
Prepaid expenses	1,357		4,184
Other Assets, Miscellaneous, Current	7		42
Other Assets, Current	3,518		7,104
Other assets:
Assets of SERP 1	0	[1]	4,123
Deferred issuance costs of the Revolver	2,973		1,572
Other	2,598		2,655
Other assets	5,571		8,350
Accounts payable and accrued liabilities:
Trade accounts payable	7,926		11,603
Drilling costs	1,475		12,074
Royalties and revenue – related	28,203		39,119
Compensation – related	2,164		9,904
Interest	125		15,531
Other	5,539		15,294
Accounts payable and accrued liabilities	45,432		103,525
Other liabilities:
Deferred gains on sale of assets	0		82,943
Firm transportation obligation	0		10,705
Asset retirement obligations	2,696		2,621
Defined benefit pension obligations	1,132		1,129
Postretirement health care benefit obligations	523		731
Compensation-related	0		1,447
Deferred compensation – SERP obligations and other	0		4,434
Other	100		928
Other liabilities	$ 4,451		$ 104,938

[1] 1 In connection with our emergence from bankruptcy, the assets of the SERP reverted to us upon the release of claims by our employees attributable to certain deferred compensation arrangements in September 2016. The SERP assets were liquidated by the plan trustee in November 2016 and the cash value was transferred to us (see Notes 3, 4 and 5).