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Note 2 - Summary of Significant Accounting Policies (Detail) - The maturities of notes receivable for each of the five years subsequent to December 31, 2012 are: (USD $)
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Dec. 31, 2018
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Dec. 31, 2017
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Dec. 31, 2016
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Dec. 31, 2015
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Dec. 31, 2014
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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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|---|---|---|---|---|---|---|---|---|
| 2013 | Ìý | Ìý | Ìý | Ìý | Ìý | $ 1,801,666 | Ìý | Ìý |
| 2014 | Ìý | Ìý | Ìý | Ìý | 1,778,036 | Ìý | Ìý | Ìý |
| 2015 | Ìý | Ìý | Ìý | 772,704 | Ìý | Ìý | Ìý | Ìý |
| 2016 | Ìý | Ìý | 668,575 | Ìý | Ìý | Ìý | Ìý | Ìý |
| 2017 | Ìý | 717,660 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Thereafter | 2,632,343 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| $ 8,370,984 | Ìý | Ìý | Ìý | Ìý | Ìý | $ 8,370,984 | $ 10,354,103 |
| X | ||||||||||
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- Definition
Note Receivable Due After Five Years No definition available.
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| X | ||||||||||
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- Definition
Note Receivable Due in Twelve Months No definition available.
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| X | ||||||||||
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- Definition
Note Receivable Due One To Five Years No definition available.
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| X | ||||||||||
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- Definition
Note Receivable Due One To Four Years No definition available.
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| X | ||||||||||
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- Definition
Note Receivable Due One To Three Years No definition available.
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- Definition
Note Receivable Due One To Two Years No definition available.
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| X | ||||||||||
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- Definition
An amount representing an agreement for an unconditional promise by the maker to pay the Entity (holder) a definite sum of money at a future date more than one year from the balance sheet date, net of any write-downs taken for collection uncertainty on the part of the holder. Such amount may include accrued interest receivable in accordance with the terms of the debt. The debt also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. This amount does not include amounts related to receivables held-for-sale. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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