Investment Properties - Additional Information (Detail)	3 Months Ended	12 Months Ended
Mar. 31, 2017 USD ($) a Parcel	Mar. 31, 2016 USD ($)	Dec. 31, 2016 USD ($)
Real Estate Properties [Line Items]
Number of parcels the partnership owned \| Parcel	1
Land acreage owned \| a	44
Impairment loss on investment property	$ 0	$ 2,680,000	$ 2,680,000
Parcel 20 [Member]
Real Estate Properties [Line Items]
Cumulative return percentage on farm lease	15.00%
Estimated real estate tax expense and insurance expense	$ 3,594
Impairment loss on investment property	$ 0	$ 2,680,000

Number of land parcels owned by the partnership.

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- Definition

Percentage of cumulative return on farm lease.

+ References

No definition available.

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- Definition

Area of land held.

+ References

No definition available.

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- Definition

The charge against earnings in the period to reduce the carrying amount of real property to fair value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=64862545&loc=d3e2921-110230

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

The aggregate total of real estate taxes and insurance expense.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.6)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 720
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=6419918&loc=d3e35301-107843

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