Capitalized Costs and Accumulated Depreciation, Depletion and Amortization (Tables)

3 Months Ended

Mar. 31, 2023

Extractive Industries [Abstract]

Capitalized Costs and Accumulated Depreciation, Depletion and Amortization

	March 31, 2023			December 31, 2022
	(in thousands)
Natural gas properties:
Properties subject to depletion	$	9,996,412		$	9,855,287
Unproved properties		804,218			800,592
Total		10,800,630			10,655,879
Accumulated depletion and depreciation		(4,850,385	)		(4,765,475	)
Net capitalized costs	$	5,950,245		$	5,890,404

(a) Includes capitalized asset retirement costs and the associated accumulated amortization.