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Costs Incurred for Property Acquisition, Exploration and Development (Detail) - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Dec. 31, 2022
Acquisitions:      
Acreage purchases [1] $ 25,475   $ 28,735
Development [1] 450,115   460,668
Gas gathering facilities:      
Development [1] 1,008   1,466
Subtotal [1] 495,620   517,641
Asset retirement obligations 2,377 [1] $ 3,389 18,096 [1]
Total costs incurred [1] 497,997   535,737
Exploration Expense      
Exploration:      
Drilling [1] 0   0
Expense [1] 18,087   25,194
Stock-based compensation expense [1] $ 935   $ 1,578
[1]

(a) Includes costs incurred whether capitalized or expensed.