QUARTERLY FINANCIAL DATA (UNAUDITED) (Details) - USD ($)	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Revenues
Revenues	$ 33,227,164	$ 17,413,926	$ 12,550,267	$ 23,497,243	$ 16,041,186	$ 11,583,182	$ 21,454,270	$ 37,238,340	$ 86,688,600	$ 86,316,978	$ 65,884,467
Direct Cost of Revenues
Total Direct Cost of Revenues	(6,012,476)	(7,351,331)	(2,910,331)	(3,409,863)	(4,238,951)	(2,193,559)	(7,452,580)	(10,608,999)	(19,684,001)	(24,494,089)	(20,252,943)
General and Administrative Expenses	(2,604,633)	(1,928,008)	(2,429,181)	(2,823,548)	(2,309,764)	(1,995,512)	(2,727,187)	(3,220,147)	(9,785,370)	(10,252,610)	(10,297,877)
Depreciation and Amortization	(4,452,647)	(3,756,507)	(3,755,546)	(3,796,823)	(3,433,913)	(3,063,211)	(3,120,368)	(2,697,208)	(15,761,523)	(12,314,700)	(7,929,343)
Impairment Charges									(1,119,362)	0	(2,180,730)
Total Operating Expenses	(13,069,756)	(13,035,846)	(9,095,058)	(10,030,234)	(9,982,628)	(7,252,282)	(13,300,135)	(16,526,354)	(45,230,894)	(47,061,399)	(40,660,893)
Gain (Loss) on Disposition of Assets			18,384,808	3,650,858	304	(266)			22,035,666	38	12,758,770
Total Operating Income	20,157,408	4,378,080	21,840,017	17,117,867	6,058,862	4,330,634	8,154,135	20,711,986	63,493,372	39,255,617	37,982,344
Investment Income	13,838	14,179	11,892	12,312	10,554	9,724	8,524	9,183	52,221	37,985	(529,981)
Interest Expense	(2,979,364)	(2,345,156)	(2,537,301)	(2,561,465)	(2,243,770)	(2,073,299)	(2,144,176)	(2,061,891)	(10,423,286)	(8,523,136)	(8,753,338)
Income from Continuing Operations Before Income Tax Benefit (Expense)	17,191,882	2,047,103	19,314,608	14,568,714	3,825,646	2,267,059	6,018,483	18,659,278	53,122,307	30,770,466	28,699,025
Income Tax Benefit (Expense) from Continuing Operations	(5,146,410)	(561,223)	(4,896,734)	(3,558,599)	20,769,895	(948,080)	(2,269,718)	(7,225,799)	(14,162,966)	10,326,298	(12,092,513)
Net Income from Continuing Operations	12,045,472	1,485,880	14,417,874	11,010,115	24,595,541	1,318,979	3,748,765	11,433,479	38,959,341	41,096,764	16,606,512
Income from Discontinued Operations (Net of Tax) - see Note 3	(249,061)	(1,189,708)	(254,966)	(97,816)	(268,317)	(352,079)	(69,857)	1,312,913	(1,791,551)	622,660	(407,098)
Net Income	$ 11,796,411	$ 296,172	$ 14,162,908	$ 10,912,299	$ 24,327,224	$ 966,900	$ 3,678,908	$ 12,746,392	$ 37,167,790	$ 41,719,424	$ 16,199,414
Basic
Income from Continuing Operations (in dollars per share)	$ 2.22	$ 0.27	$ 2.61	$ 1.99	$ 4.47	$ 0.24	$ 0.68	$ 2.05	$ 7.09	$ 7.42	$ 2.93
Income (loss) from Discontinued Operations (Net of Tax) (in dollars per share)	(0.05)	(0.22)	(0.05)	(0.02)	(0.05)	(0.06)	(0.01)	0.23	(0.33)	0.11	(0.07)
Basic Net Income per Share (in dollars per share)	2.17	0.05	2.56	1.97	4.42	0.18	0.67	2.28	6.76	7.53	2.86
Diluted
Income from Continuing Operations - Diluted (in dollars per share)	2.22	0.27	2.61	1.98	4.43	0.24	0.67	2.04	7.04	7.37	2.92
Income (loss) from Discontinued Operations (Net of Tax) - Diluted (in dollars per share)	(0.05)	(0.22)	(0.05)	(0.02)	(0.05)	(0.06)	(0.01)	0.23	(0.32)	0.11	(0.07)
Net Income - Diluted (in dollars per share)	$ 2.17	$ 0.05	$ 2.56	$ 1.96	$ 4.38	$ 0.18	$ 0.66	$ 2.27	$ 6.72	$ 7.48	$ 2.85
Income Properties
Revenues
Revenues	$ 11,728,550	$ 9,360,155	$ 9,781,299	$ 9,205,727	$ 8,840,425	$ 7,928,258	$ 7,565,007	$ 7,073,240	$ 40,075,731	$ 31,406,930	$ 25,092,484
Direct Cost of Revenues
Total Direct Cost of Revenues	(2,492,325)	(1,773,840)	(2,034,889)	(1,869,029)	(2,160,999)	(1,715,516)	(1,629,515)	(1,411,713)	(8,170,083)	(6,917,743)	(5,204,863)
Depreciation and Amortization									(15,728,095)	(12,272,265)	(7,872,689)
Commercial Loan Investments
Revenues
Revenues		41,262	273,467	300,999	325,240	637,801	553,159	536,489	615,728	2,052,689	2,588,235
Real Estate Operations
Revenues
Revenues	21,498,614	8,012,509	2,495,501	13,990,517	6,875,521	3,017,123	13,336,104	29,628,611	45,997,141	52,857,359	38,203,748
Direct Cost of Revenues
Total Direct Cost of Revenues	$ (3,520,151)	$ (5,577,491)	$ (875,442)	$ (1,540,834)	$ (2,077,952)	$ (478,043)	$ (5,823,065)	$ (9,197,286)	(11,513,918)	(17,576,346)	(15,048,080)
Golf Operations
Direct Cost of Revenues
Impairment Charges									(1,100,000)
Agriculture and Other Income
Direct Cost of Revenues
Depreciation and Amortization									$ (33,428)	$ (42,435)	$ (56,654)