Summary of Significant Accounting Policies - Additional Information (Detail)		12 Months Ended
		Dec. 31, 2021 USD ($) Counterparties Customer Counterparty	Dec. 31, 2020 USD ($) Customer	Dec. 31, 2019 USD ($)
Summary Of Significant Accounting Policies [Line Items]
Net brokered margin gain (loss)		$ 1,100,000	$ (14,200,000)	$ (14,200,000)
Allowance for doubtful accounts on accounts receivable		568,000	3,004,000
Bad debt (income) expense		200,000	400,000	4,341,000
Net book value of unproved properties	[1]	837,334,000	859,766,000	868,180,000
Abandonment and impairment of unproved properties		7,206,000	19,334,000	1,235,342,000
Depreciation expense		$ 2,400,000	2,600,000	5,000,000.0
Lessee, operating lease, contract term		12 months
Marketable securities held in deferred compensation plans		$ 69,600,000	63,900,000
Deferred financing cost related to bank credit facility		5,200,000
Other investments including surface acreage		$ 11,500,000	$ 11,900,000
Number of customers accounted more than 10% of total oil and gas revenues | Customer		1	0
Number of counterparties | Counterparty		5
Number of financial institutions included in counter parties | Counterparty		15
Number of counterparties amount payable | Counterparties		1
Number of counterparties amount receivable | Counterparties		4
Counterparties in a Liability position
Summary Of Significant Accounting Policies [Line Items]
Net derivative liability		$ 637,000
Counterparties in a Receivable position
Summary Of Significant Accounting Policies [Line Items]
Derivative amount receivable		$ 4,900,000
Other property and equipment | Minimum [Member]
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
North Louisiana
Summary Of Significant Accounting Policies [Line Items]
Abandonment and impairment of unproved properties				$ 1,200,000,000

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