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Supplemental Oil and Gas Disclosures (Unaudited) (Tables)
 12 Months Ended
Dec. 31, 2021
Extractive Industries [Abstract]  
Schedule of Oil and Natural Gas Properties
Aggregate capitalized costs related to oil and gas royalty and mineral interests with applicable accumulated depreciation, depletion and amortization at December 31 are as follows:

2021
Proved developed$3,266 
Proved undeveloped16,246 
Less: accumulated depreciation, depletion and amortization 868 
Net royalty interests in oil and natural gas properties$18,644 
Schedule of Proved Developed and Undeveloped Oil and Gas Reserve Quantities
The following table presents the Company's estimated net proved oil and natural gas reserves as of December 31, 2021 based on the reserve report prepared by Haas Engineering, the Company’s independent petroleum engineering firm. All of the Company’s reserves are located in the United States.

Net reserves as of December 31, 2021
Oil (bbl) (1)
NGL (bbl) (1)
Residue gas (Mcf) (2)
Proved developed167,430 282,230 16,617,360 
Proved undeveloped220 90 1,210 
Total167,650 282,320 16,618,570 

(1) Bbl. One stock tank barrel, or 42 U.S. gallons liquid volume.

(2) Mcf. One thousand cubic feet of natural gas at the contractual pressure and temperature bases.
Standardized Measure of Discounted Future Cash Flows Relating to Proved Reserves Disclosure
The following table provides the future net cash flows relating to proved oil and gas reserves based on the standardized measure of discounted cash flows as of December 31, 2021:

Gross AmountsStatutory tax rateNet Amounts
Future cash inflows$71,400 
Future production costs14,664 
Future net cash flows before income tax expense56,736 21 %44,821 
10% discount to reflect timing of cash flows(19,897)21 %(15,719)
Standardized measure of discounted cash flows$36,839 21 %$29,102