Subsequent Event	3 Months Ended
Jun. 30, 2023
Subsequent Events [Abstract]
Subsequent Event	(12) Subsequent Event. In the ordinary course of business, the Company’s mining tenants make estimated royalty payments and conduct an annual volumetric analysis to reconcile the actual amounts due. This process is complicated, especially when the mining tenant is simultaneously mining separate tracts with different owners. On August 8, 2023, the Company received correspondence from one of its mining tenants asserting that the tenant had overpaid royalties by approximately $840,000. The Company is reviewing this analysis to make its own determination as to the amount of the royalties. Depending on the outcome of that analysis, the Company expects to enter into a separate agreement or negotiate an amendment to the mining lease regarding the issue. The Company cannot be certain as to the outcome of its separate analysis or such negotiations.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org//855/tableOfContent

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 855
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147483399/855-10-50-2

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