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Real Estate and Intangible Assets - Fair Value of Assets Acquired and Liabilities Assumed Related to Property Acquired (Detail) - USD ($) | Sep. 30, 2016 | Sep. 30, 2015
--- | --- | ---
Business Acquisition [Line Items] |  |
Total Purchase Price | $ (583,336) |
2015 New Real Estate Activity [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | $ 66,506,980
2015 New Real Estate Activity [Member] | Espinosa Road [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 16,905,500
2015 New Real Estate Activity [Member] | Parrish Road [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 3,913,280
2015 New Real Estate Activity [Member] | Immokalee Exchange [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 15,757,700
2015 New Real Estate Activity [Member] | Holt County [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 5,504,000
2015 New Real Estate Activity [Member] | Rock County [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 5,504,000
2015 New Real Estate Activity [Member] | Bear Mountain [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 18,922,500
2015 New Real Estate Activity [Member] | Irrigation System [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 4,077,857
2015 New Real Estate Activity [Member] | Irrigation System [Member] | Espinosa Road [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 497,401
2015 New Real Estate Activity [Member] | Irrigation System [Member] | Parrish Road [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 1,299,851
2015 New Real Estate Activity [Member] | Irrigation System [Member] | Immokalee Exchange [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 515,879
2015 New Real Estate Activity [Member] | Irrigation System [Member] | Holt County [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 729,884
2015 New Real Estate Activity [Member] | Irrigation System [Member] | Rock County [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 540,589
2015 New Real Estate Activity [Member] | Irrigation System [Member] | Bear Mountain [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 494,253
2015 New Real Estate Activity [Member] | In-place Leases [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 530,283
2015 New Real Estate Activity [Member] | In-place Leases [Member] | Espinosa Road [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 246,472
2015 New Real Estate Activity [Member] | In-place Leases [Member] | Parrish Road [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 54,405
2015 New Real Estate Activity [Member] | In-place Leases [Member] | Immokalee Exchange [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 229,406
2015 New Real Estate Activity [Member] | In-place Leases [Member] | Holt County [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 0
2015 New Real Estate Activity [Member] | In-place Leases [Member] | Rock County [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 0
2015 New Real Estate Activity [Member] | In-place Leases [Member] | Bear Mountain [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 0
2015 New Real Estate Activity [Member] | Leasing Costs [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 326,394
2015 New Real Estate Activity [Member] | Leasing Costs [Member] | Espinosa Road [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 43,894
2015 New Real Estate Activity [Member] | Leasing Costs [Member] | Parrish Road [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 77,449
2015 New Real Estate Activity [Member] | Leasing Costs [Member] | Immokalee Exchange [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 148,691
2015 New Real Estate Activity [Member] | Leasing Costs [Member] | Holt County [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 27,494
2015 New Real Estate Activity [Member] | Leasing Costs [Member] | Rock County [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 28,866
2015 New Real Estate Activity [Member] | Leasing Costs [Member] | Bear Mountain [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 0
2015 New Real Estate Activity [Member] | Customer Relationships [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 396,458
2015 New Real Estate Activity [Member] | Customer Relationships [Member] | Espinosa Road [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 180,789
2015 New Real Estate Activity [Member] | Customer Relationships [Member] | Parrish Road [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 35,892
2015 New Real Estate Activity [Member] | Customer Relationships [Member] | Immokalee Exchange [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 179,777
2015 New Real Estate Activity [Member] | Customer Relationships [Member] | Holt County [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 0
2015 New Real Estate Activity [Member] | Customer Relationships [Member] | Rock County [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 0
2015 New Real Estate Activity [Member] | Customer Relationships [Member] | Bear Mountain [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 0
2016 New Real Estate Activity [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 81,557,106 |
2016 New Real Estate Activity [Member] | Gunbarrel Road [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 25,735,815 |
2016 New Real Estate Activity [Member] | Calaveras Avenue [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 15,470,000 |
2016 New Real Estate Activity [Member] | Orange Avenue [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 5,100,000 |
2016 New Real Estate Activity [Member] | Lithia Road [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 1,700,000 |
2016 New Real Estate Activity [Member] | Baca County [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 6,322,853 |
2016 New Real Estate Activity [Member] | Diego Ranch [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 13,996,606 |
2016 New Real Estate Activity [Member] | Nevada Ranch [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 13,231,832 |
2016 New Real Estate Activity [Member] | Irrigation System [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 4,953,388 |
2016 New Real Estate Activity [Member] | Irrigation System [Member] | Gunbarrel Road [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 2,830,738 |
2016 New Real Estate Activity [Member] | Irrigation System [Member] | Calaveras Avenue [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 424,112 |
2016 New Real Estate Activity [Member] | Irrigation System [Member] | Orange Avenue [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 934,482 |
2016 New Real Estate Activity [Member] | Irrigation System [Member] | Lithia Road [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 213,325 |
2016 New Real Estate Activity [Member] | Irrigation System [Member] | Baca County [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 0 |
2016 New Real Estate Activity [Member] | Irrigation System [Member] | Diego Ranch [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 45,535 |
2016 New Real Estate Activity [Member] | Irrigation System [Member] | Nevada Ranch [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 505,196 |
2016 New Real Estate Activity [Member] | In-place Leases [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 501,527 |
2016 New Real Estate Activity [Member] | In-place Leases [Member] | Gunbarrel Road [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 381,977 |
2016 New Real Estate Activity [Member] | In-place Leases [Member] | Calaveras Avenue [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 0 |
2016 New Real Estate Activity [Member] | In-place Leases [Member] | Orange Avenue [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 0 |
2016 New Real Estate Activity [Member] | In-place Leases [Member] | Lithia Road [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 7,739 |
2016 New Real Estate Activity [Member] | In-place Leases [Member] | Baca County [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 0 |
2016 New Real Estate Activity [Member] | In-place Leases [Member] | Diego Ranch [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 58,535 |
2016 New Real Estate Activity [Member] | In-place Leases [Member] | Nevada Ranch [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 53,276 |
2016 New Real Estate Activity [Member] | Leasing Costs [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 406,390 |
2016 New Real Estate Activity [Member] | Leasing Costs [Member] | Gunbarrel Road [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 249,893 |
2016 New Real Estate Activity [Member] | Leasing Costs [Member] | Calaveras Avenue [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 0 |
2016 New Real Estate Activity [Member] | Leasing Costs [Member] | Orange Avenue [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 0 |
2016 New Real Estate Activity [Member] | Leasing Costs [Member] | Lithia Road [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 16,265 |
2016 New Real Estate Activity [Member] | Leasing Costs [Member] | Baca County [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 0 |
2016 New Real Estate Activity [Member] | Leasing Costs [Member] | Diego Ranch [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 73,337 |
2016 New Real Estate Activity [Member] | Leasing Costs [Member] | Nevada Ranch [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 66,895 |
2016 New Real Estate Activity [Member] | Above (Below) Market Lease [Member] | Gunbarrel Road [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 0 |
2016 New Real Estate Activity [Member] | Above (Below) Market Lease [Member] | Orange Avenue [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 0 |
2016 New Real Estate Activity [Member] | Above (Below) Market Lease [Member] | Lithia Road [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | (9,075) |
2016 New Real Estate Activity [Member] | Above (Below) Market Lease [Member] | Baca County [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 0 |
2016 New Real Estate Activity [Member] | Above (Below) Market Lease [Member] | Diego Ranch [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | (316,936) |
2016 New Real Estate Activity [Member] | Above (Below) Market Lease [Member] | Nevada Ranch [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | (257,325) |
2016 New Real Estate Activity [Member] | Other Improvements [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 2,079,102 |
2016 New Real Estate Activity [Member] | Other Improvements [Member] | Gunbarrel Road [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 2,079,102 |
2016 New Real Estate Activity [Member] | Other Improvements [Member] | Calaveras Avenue [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 0 |
2016 New Real Estate Activity [Member] | Other Improvements [Member] | Orange Avenue [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 0 |
2016 New Real Estate Activity [Member] | Other Improvements [Member] | Lithia Road [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 0 |
2016 New Real Estate Activity [Member] | Other Improvements [Member] | Baca County [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 0 |
2016 New Real Estate Activity [Member] | Other Improvements [Member] | Diego Ranch [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 0 |
2016 New Real Estate Activity [Member] | Other Improvements [Member] | Nevada Ranch [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 0 |
2016 New Real Estate Activity [Member] | Horticulture [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 11,430,452 |
2016 New Real Estate Activity [Member] | Horticulture [Member] | Gunbarrel Road [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 0 |
2016 New Real Estate Activity [Member] | Horticulture [Member] | Calaveras Avenue [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 11,430,452 |
2016 New Real Estate Activity [Member] | Horticulture [Member] | Orange Avenue [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 0 |
2016 New Real Estate Activity [Member] | Horticulture [Member] | Lithia Road [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 0 |
2016 New Real Estate Activity [Member] | Horticulture [Member] | Baca County [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 0 |
2016 New Real Estate Activity [Member] | Horticulture [Member] | Diego Ranch [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 0 |
2016 New Real Estate Activity [Member] | Horticulture [Member] | Nevada Ranch [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 0 |
Land and Land Improvements [Member] | 2015 New Real Estate Activity [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 60,647,299
Land and Land Improvements [Member] | 2015 New Real Estate Activity [Member] | Espinosa Road [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 15,852,466
Land and Land Improvements [Member] | 2015 New Real Estate Activity [Member] | Parrish Road [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 2,403,064
Land and Land Improvements [Member] | 2015 New Real Estate Activity [Member] | Immokalee Exchange [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 14,410,840
Land and Land Improvements [Member] | 2015 New Real Estate Activity [Member] | Holt County [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 4,690,369
Land and Land Improvements [Member] | 2015 New Real Estate Activity [Member] | Rock County [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 4,862,313
Land and Land Improvements [Member] | 2015 New Real Estate Activity [Member] | Bear Mountain [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 18,428,247
Land and Land Improvements [Member] | 2016 New Real Estate Activity [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 59,079,293 |
Land and Land Improvements [Member] | 2016 New Real Estate Activity [Member] | Gunbarrel Road [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 16,755,814 |
Land and Land Improvements [Member] | 2016 New Real Estate Activity [Member] | Calaveras Avenue [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 3,615,436 |
Land and Land Improvements [Member] | 2016 New Real Estate Activity [Member] | Orange Avenue [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 4,135,741 |
Land and Land Improvements [Member] | 2016 New Real Estate Activity [Member] | Lithia Road [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 1,461,090 |
Land and Land Improvements [Member] | 2016 New Real Estate Activity [Member] | Baca County [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 6,111,287 |
Land and Land Improvements [Member] | 2016 New Real Estate Activity [Member] | Diego Ranch [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 14,136,135 |
Land and Land Improvements [Member] | 2016 New Real Estate Activity [Member] | Nevada Ranch [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 12,863,790 |
Buildings [Member] | 2015 New Real Estate Activity [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 528,689
Buildings [Member] | 2015 New Real Estate Activity [Member] | Espinosa Road [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 84,478
Buildings [Member] | 2015 New Real Estate Activity [Member] | Parrish Road [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 42,619
Buildings [Member] | 2015 New Real Estate Activity [Member] | Immokalee Exchange [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 273,107
Buildings [Member] | 2015 New Real Estate Activity [Member] | Holt County [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 56,253
Buildings [Member] | 2015 New Real Estate Activity [Member] | Rock County [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | 72,232
Buildings [Member] | 2015 New Real Estate Activity [Member] | Bear Mountain [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price |  | $ 0
Buildings [Member] | 2016 New Real Estate Activity [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 3,690,290 |
Buildings [Member] | 2016 New Real Estate Activity [Member] | Gunbarrel Road [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 3,438,291 |
Buildings [Member] | 2016 New Real Estate Activity [Member] | Calaveras Avenue [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 0 |
Buildings [Member] | 2016 New Real Estate Activity [Member] | Orange Avenue [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 29,777 |
Buildings [Member] | 2016 New Real Estate Activity [Member] | Lithia Road [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 10,656 |
Buildings [Member] | 2016 New Real Estate Activity [Member] | Baca County [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 211,566 |
Buildings [Member] | 2016 New Real Estate Activity [Member] | Diego Ranch [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | 0 |
Buildings [Member] | 2016 New Real Estate Activity [Member] | Nevada Ranch [Member] |  |
Business Acquisition [Line Items] |  |
Total Purchase Price | $ 0 |

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- Definition Amount recognized as of the acquisition date for the identifiable assets acquired in excess of (less than) the aggregate liabilities assumed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 55 -Paragraph 37 -URI http://asc.fasb.org/extlink&oid=35744172&loc=d3e2207-128464 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=56956791&loc=d3e4845-128472 + Details
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