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Oil and Gas Royalty Interests
3 Months Ended
Mar. 31, 2024
Real Estate [Abstract]  
Oil and Gas Royalty Interests Oil and Gas Royalty Interests
As of March 31, 2024 and December 31, 2023, we owned the following oil and gas royalty interests (in thousands):

March 31,
2024
December 31,
2023
Oil and gas royalty interests:
1/16th nonparticipating perpetual royalty interests (1)
$— $— 
1/128th nonparticipating perpetual royalty interests (1)
— — 
Royalty interests acquired, at cost51,494 51,494 
Total royalty interests51,494 51,494 
Less: accumulated depletion(5,340)(4,885)
Royalty interests, net$46,154 $46,609 
(1)Royalty interests assigned through the Declaration of Trust.
There were no sales or acquisitions of oil and gas royalty interests during the three months ended March 31, 2024 or 2023.
Depletion expense was $0.5 million and $0.3 million for the three months ended March 31, 2024 and 2023, respectively.