Components of Selected Balance Sheet Accounts (Detail) - USD ($) $ in Thousands		Jun. 30, 2018	Dec. 31, 2017
Other current assets:
Tubular inventory and well materials		$ 3,817	$ 5,146
Prepaid expenses		1,377	1,104
Other Assets, Current		5,194	6,250
Other assets:
Deferred issuance costs of the Revolver		2,923	2,857
Earnest Money Deposits	[1]	0	3,210
Other		33	2,440
Other assets		2,956	8,507
Accounts payable and accrued liabilities:
Trade accounts payable		34,582	22,579
Drilling costs		34,620	22,389
Royalties and revenue – related		43,862	39,287
Production, ad valorem and other taxes	[2]	3,827	1,275
Compensation – related		2,802	2,975
Interest		377	223
Reserve for bankruptcy claims		3,940	3,933
Guarantee Deposit	[3]	700	0
Other	[2]	3,272	3,520
Accounts payable and accrued liabilities		127,982	96,181
Other liabilities:
Asset retirement obligations		3,987	3,286
Defined benefit pension obligations		897	971
Postretirement health care benefit obligations		509	476
Other		100	100
Other liabilities		$ 5,493	$ 4,833

[1] Represents the amount remaining in the Escrow Account for the Devon Acquisition, which was utilized to fund the remaining liabilities due to Devon for the final settlement in March 2018 (see Note 3).

[2] The amount for December 31, 2017 was reclassified from Accounts payable and accrued expenses - Other.

[3] Represents the deposit paid to us related to the Mid-Continent divestiture (see Note 3).