Business Segment Data - Summary of Operations in Different Segments (Detail) - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Segment Reporting Information [Line Items]
Income Properties	$ 6,429,241	$ 4,260,675
Commercial Loan Investments	881,245	631,484
Real Estate Operations	9,560,898	859,801
Golf Operations	1,464,359	1,537,426
Agriculture and Other Income	18,692	18,939
Total Revenues	18,354,435	7,308,325
Operating Income (Loss)	6,393,316	1,493,887
Depreciation and Amortization	2,067,367	1,155,739
Capital Expenditures	2,746,581	81,353
Identifiable Assets	408,254,856		$ 404,353,644
Income Properties [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)	5,252,534	3,619,829
Depreciation and Amortization	1,981,050	1,085,637
Capital Expenditures	2,730,714	54,264
Identifiable Assets	278,538,917		277,519,902
Commercial Loan Investments [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)	881,245	631,484
Identifiable Assets	38,572,891		38,487,119
Real Estate Operations [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)	7,303,857	261,078
Identifiable Assets	63,574,249		59,787,157
Golf Operations [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)	59,771	147,814
Depreciation and Amortization	68,649	58,776
Capital Expenditures		16,017
Identifiable Assets	3,567,442		3,607,259
Agriculture and Other Income [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)	(29,359)	(36,212)
Depreciation and Amortization	17,668	11,326
Capital Expenditures	15,867	11,072
Identifiable Assets	24,001,357		$ 24,952,207
General and Corporate Expense [Member]
Segment Reporting Information [Line Items]
Operating Income (Loss)	$ (7,074,732)	$ (3,130,106)