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Business Segment Data - Summary of Operations in Different Segments (Detail) (USD $)
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12 Months Ended | ||
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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| Segment Reporting Information [Line Items] | |||
| Revenues | $ 25,837,844 | $ 16,232,970 | $ 12,966,428 |
| Operating Income (Loss) | 6,279,377 | 863,901 | (8,968,692) |
| Identifiable Assets | 226,183,680 | 184,696,900 | 170,265,803 |
| Depreciation and Amortization | 2,885,317 | 2,010,505 | 2,197,469 |
| Capital Expenditures | 58,447,040 | 26,395,624 | 3,327,346 |
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Operating Segments [Member] | Income Properties [Member]
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| Segment Reporting Information [Line Items] | |||
| Revenues | 12,828,214 | 8,463,082 | 7,679,224 |
| Operating Income (Loss) | 11,494,240 | 7,786,986 | 7,152,265 |
| Identifiable Assets | 151,682,578 | 130,726,326 | 116,943,722 |
| Depreciation and Amortization | 2,650,310 | 1,742,589 | 1,500,511 |
| Capital Expenditures | 40,418,981 | 25,945,926 | 2,493,663 |
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Operating Segments [Member] | Commercial Mortgage Loan [Member]
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| Segment Reporting Information [Line Items] | |||
| Revenues | 1,712,913 | ||
| Operating Income (Loss) | 1,712,913 | ||
| Identifiable Assets | 18,887,979 | ||
| Depreciation and Amortization | |||
| Capital Expenditures | 17,658,204 | ||
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Operating Segments [Member] | Real Estate [Member]
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| Segment Reporting Information [Line Items] | |||
| Revenues | 5,945,510 | 3,098,840 | 501,626 |
| Operating Income (Loss) | 2,291,609 | 2,393,778 | (250,504) |
| Identifiable Assets | 29,929,179 | 34,161,944 | 34,529,445 |
| Depreciation and Amortization | |||
| Capital Expenditures | |||
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Operating Segments [Member] | Golf Operations [Member]
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| Segment Reporting Information [Line Items] | |||
| Revenues | 5,074,898 | 4,506,069 | 4,660,802 |
| Operating Income (Loss) | (412,177) | (887,564) | (1,332,835) |
| Identifiable Assets | 3,269,212 | 3,230,225 | 2,858,448 |
| Depreciation and Amortization | 205,097 | 173,110 | 359,743 |
| Capital Expenditures | 223,690 | 343,969 | 267,273 |
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Operating Segments [Member] | Agriculture and Other [Member]
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| Segment Reporting Information [Line Items] | |||
| Revenues | 276,309 | 164,979 | 124,776 |
| Operating Income (Loss) | 127,949 | (33,855) | (526,647) |
| Identifiable Assets | 22,414,732 | 16,578,405 | 15,934,188 |
| Depreciation and Amortization | 29,910 | 94,806 | 337,215 |
| Capital Expenditures | 146,165 | 105,729 | 566,410 |
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Operating Segments [Member] | General and Corporate Expense [Member]
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| Segment Reporting Information [Line Items] | |||
| Operating Income (Loss) | $ (8,935,157) | $ (8,395,444) | $ (14,010,971) |