| Commitments and Contingencies - Additional Information (Detail) (USD $) | 9 Months Ended | 
|---|---|
| Sep. 30, 2013
 Installment
 acre | |
| Commitment And Contingencies [Line Items] | |
| Area for installation of irrigation equipment | 121 | 
| Total farmable area of Colding loop property | 181 | 
| Estimated expended irrigation costs | $ 573,000 | 
| Additional leased farm land | 60 | 
| Additional estimated irrigation costs | 300,000 | 
| Number of installments paid | 2 | 
| West Beach [Member] | Minimum [Member] | |
| Commitment And Contingencies [Line Items] | |
| Additional estimated irrigation costs | 250,000 | 
| Expected capital improvements on lease | 200,000 | 
| Amount payable to tenant under agreement in two installments | 46,000 | 
| West Beach [Member] | Maximum [Member] | |
| Commitment And Contingencies [Line Items] | |
| Additional estimated irrigation costs | 300,000 | 
| Expected capital improvements on lease | $ 250,000 | 
| X | ||||||||||
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- Definition Additional farmable area under lease. No definition available. 
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| X | ||||||||||
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- Definition Amount payable to tenant under lease agreement. No definition available. 
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| X | ||||||||||
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- Details 
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| X | ||||||||||
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- Definition Estimated additional cost of well and irrigation equipment. No definition available. 
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| X | ||||||||||
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- Definition Expected capital improvements on lease. No definition available. 
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| X | ||||||||||
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- Definition Expended cost of well and irrigation equipment. No definition available. 
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| X | ||||||||||
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- Definition Initial farmable area under lease. No definition available. 
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| X | ||||||||||
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- Definition Number of installment paid. No definition available. 
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| X | ||||||||||
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- Definition Area of land subject to a ground lease. No definition available. 
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