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Intangible assets (Details) (USD $) | Dec. 31, 2013 | Dec. 31, 2012
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Cost |  |
Finite-Lived Intangible Assets, Gross | $ 2,678,775 | $ 2,678,775
Accumulated amortization [Abstract] |  |
Finite-Lived Intangible Assets, Accumulated Amortization | (1,582,287) | (1,223,760)
Intangible Assets, Net (Excluding Goodwill) | 1,096,488 | 1,455,015
Intangible asset management service agreement [Member] |  |
Cost |  |
Finite-Lived Intangible Assets, Gross | 856,356 | 856,356
Accumulated amortization [Abstract] |  |
Finite-Lived Intangible Assets, Accumulated Amortization | (570,904) | (428,569)
Belize water production and supply agreement [Member] |  |
Cost |  |
Finite-Lived Intangible Assets, Gross | 1,522,419 | 1,522,419
Accumulated amortization [Abstract] |  |
Finite-Lived Intangible Assets, Accumulated Amortization | (723,883) | (657,691)
Usufruct option [Member] |  |
Cost |  |
Finite-Lived Intangible Assets, Gross | 300,000 | 300,000
Accumulated amortization [Abstract] |  |
Finite-Lived Intangible Assets, Accumulated Amortization | $ (287,500) | $ (137,500)

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph ((a)(1),(b)) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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