CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues:
Lease revenue	$ 26,798,000	$ 21,755,000	$ 14,106,000
Mining Royalty and rents	10,683,000	9,465,000	9,477,000
Total Revenues	37,481,000	31,220,000	23,583,000
Cost of operations:
Depreciation, depletion and amortization	11,217,000	12,737,000	5,828,000
Operating expenses	7,065,000	6,219,000	3,333,000
Property taxes	4,125,000	3,751,000	2,826,000
Management company indirect	3,416,000	3,168,000	2,951,000
Corporate expenses (Note 3 Related Party)	3,662,000	3,071,000	3,511,000
Total cost of operations	29,485,000	28,946,000	18,449,000
Total operating profit	7,996,000	2,274,000	5,134,000
Net investment income, including realized gains of $0, $0, and $298, respectively	5,473,000	4,215,000	7,415,000
Interest expense	(3,045,000)	(2,304,000)	(1,100,000)
Equity in loss of joint ventures	(5,721,000)	(5,754,000)	(5,690,000)
Gain on remeasurement of investment in real estate partnership	0	51,139,000	0
Gain on sale of real estate	874,000	805,000	9,170,000
Income before income taxes	5,577,000	50,375,000	14,929,000
Provision for income taxes	1,530,000	10,281,000	3,207,000
Net income	4,047,000	40,094,000	11,722,000
(Loss) gain attributable to noncontrolling interest	(518,000)	11,879,000	(993,000)
Net income attributable to the Company	$ 4,565,000	$ 28,215,000	$ 12,715,000
Earnings per common share:
Basic	$ 0.49	$ 3.02	$ 1.33
Diluted	$ 0.48	$ 3.00	$ 1.32
Number of shares (in thousands) used in computing:
-basic earnings per common share	9,386	9,355	9,580
-diluted earnings per common share	9,435	9,397	9,609