Summary of Significant Accounting Policies - Additional Information (Detail)		12 Months Ended
		Dec. 31, 2024 USD ($) Counterparties Counterparty Customer	Dec. 31, 2023 USD ($) Customer	Dec. 31, 2022 USD ($) Customer
Summary Of Significant Accounting Policies [Line Items]
Net brokered margin gain (loss)		$ 7,500,000	$ 3,700,000	$ 7,300,000
Allowance for doubtful accounts on accounts receivable		255,000	308,000
Bad debt (income) expense		50,000	0	(250,000)
Net book value of unproved properties	[1]	819,656,000	789,871,000	800,592,000
Abandonment and impairment of unproved properties		8,417,000	46,359,000	28,608,000
Depreciation expense		$ 1,400,000	1,500,000	$ 2,200,000
Lessee, operating lease, contract term		12 months
Marketable securities held in deferred compensation plans		$ 61,000,000	72,000,000
Deferred financing cost related to bank credit facility		5,000,000	7,300,000
Investments and other		2,000,000	1,900,000
Surface acreage investments		7,600,000	$ 7,700,000
Deferred tax assets		$ 4,000,000
Number of customers accounted more than 10% of total oil and gas revenues | Customer		2	1	0
Number of counterparties | Counterparty		5
Number of financial institutions included in counter parties | Counterparty		15
Number of counterparties amount payable | Counterparties		5
Impairment of oil and gas properties		$ 0
Revenue Contract with Customer | Customer A | Customer Concentration Risk
Summary Of Significant Accounting Policies [Line Items]
Percentage of cash		15.00%	13.00%
Revenue Contract with Customer | Customer B | Customer Concentration Risk
Summary Of Significant Accounting Policies [Line Items]
Percentage of cash		10.00%
Counterparties in a Liability position
Summary Of Significant Accounting Policies [Line Items]
Net derivative liability		$ 11,500,000
Other property and equipment | Minimum
Summary Of Significant Accounting Policies [Line Items]
Useful life of assets		3 years
Other property and equipment | Maximum
Summary Of Significant Accounting Policies [Line Items]
Useful life of assets		10 years

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