Quarterly report pursuant to Section 13 or 15(d)

Components of Selected Balance Sheet Accounts (Detail)

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Components of Selected Balance Sheet Accounts (Detail) - USD ($)
$ in Thousands
Jun. 30, 2017
Dec. 31, 2016
Other current assets:    
Tubular inventory and well materials $ 2,100 $ 2,125
Prepaid expenses 1,000 903
Other Assets, Current 3,100 3,028
Other assets:    
Deferred issuance costs of the Revolver 2,887 2,785
Other 2,536 2,544
Other assets 5,423 5,329
Accounts payable and accrued liabilities:    
Trade accounts payable 10,166 9,825
Drilling costs 4,802 2,479
Royalties and revenue – related 33,231 26,116
Compensation – related 1,739 2,557
Interest 84 55
Reserve for bankruptcy claims 3,922 3,922
Other 5,319 4,743
Accounts payable and accrued liabilities 59,263 49,697
Other liabilities:    
Asset retirement obligations (“AROs”) 2,506 2,459
Defined benefit pension obligations 972 1,025
Postretirement health care benefit obligations 525 488
Other 100 100
Other liabilities $ 4,103 $ 4,072