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Additional Balance Sheet Information - Components of Balance Sheet Amounts (Detail) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts receivable, gross $ 372,440 $ 389,128
Allowance for doubtful accounts (1,259) (1,526)
Total accounts receivable, net 371,181 387,602
Revenue suspense 78,950 75,685
Royalties payable 133,092 124,884
Production taxes payable 21,048 16,126
Total revenue and production taxes payable 233,090 216,695
Accrued capital costs 128,592 216,079
Accrued lease operating expenses 34,151 26,988
Accrued oil and gas purchases 51,087 32,713
Accrued general and administrative expenses 41,843 23,901
Accrued midstream and well services operating expenses 17,958 17,521
Other accrued liabilities 7,448 14,449
Total accrued liabilities 281,079 331,651
Trade accounts    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts receivable, gross 276,629 245,546
Joint interest accounts    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts receivable, gross 82,112 133,375
Other accounts    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts receivable, gross $ 13,699 $ 10,207