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Related party transactions (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Oct. 24, 2022
Related party transactions
Other liabilities	$ 1,204	$ 1,523
Related Party | Grey Rock Administration, LLC (the Manager)
Related party transactions
Other liabilities				$ 10,000
Oil and gas management agreement, renewal term	1 year
Oil and gas management agreement, transition services term	90 days
Management fees paid	$ 10,000	1,900
Related Party | Investment Advisor Under Funds Control
Related party transactions
Management fees paid		$ 7,900	$ 6,200

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- Definition

Amount of fees paid to the management company for running the Company's day-to-day business functions.

+ References

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- Definition

Represents the renewal term for the oil and gas property management service agreement.

+ References

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- Definition

Represents the period for which the management company will provide transition services upon termination of the oil and gas property management service agreement.

+ References

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- Definition

Amount of liabilities classified as other, due within one year or the normal operating cycle, if longer.

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