Commitments and Contingencies - Additional Information (Details)	1 Months Ended		3 Months Ended		6 Months Ended
	Mar. 31, 2024 USD ($) agreement	Dec. 31, 2021 USD ($) agreement	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)
Commitments and Contingencies:
Remaining environmental accrued liability recorded			$ 0		$ 0		$ 0
Total revenues			79,503,000	$ 71,971,000	155,802,000	$ 151,841,000
Sinking fund account maximum value upon which obligation ceases		$ 172,600,000	4,300,000		4,300,000
Restricted Investment - decommissioning of offshore production facilities			4,500,000		4,500,000
Beta's decommissioning obligations, full supported by surety bonds			161,300,000		161,300,000
Beta's decommissioning obligations, cash			20,400,000		20,400,000
Number of escrow funding agreements | agreement		2
Number of escrow funding agreements amended | agreement	1
Escrow funded yearly amount	$ 8,000,000.0	$ 14,800,000
Oil and natural gas sales
Commitments and Contingencies:
Total revenues			72,346,000	67,393,000	147,668,000	133,677,000
Other income
Commitments and Contingencies:
Total revenues			7,157,000	$ 4,578,000	8,134,000	$ 18,164,000
Prior period adjustment
Commitments and Contingencies:
Revenue payables in suspense			$ (2,800,000)		$ (2,800,000)
Error correction, type extensible enumeration					ampy:RevisionOfImproperlyClassifiedCertainNonOperatedRevenueMember
Prior period adjustment | Oil and natural gas sales
Commitments and Contingencies:
Total revenues					$ 2,200,000
Prior period adjustment | Other income
Commitments and Contingencies:
Total revenues					$ 600,000