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Commitments and contingencies (Details Textual) (USD $) | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011 | Mar. 04, 2010 gal | Dec. 31, 2009 gal | Dec. 31, 2007 gal
Commitments And Contingencies [Line Items] |  |  |  |  |  |
Operating Leases, Rent Expense, Net, Total | $ 822,159 | $ 559,811 | $ 464,355 |  |  |
Royalty Payment Percentage | 7.50% |  |  |  |  |
Employment Agreement Base Annual Salaries | 3,000,000 |  |  |  |  |
Goodwill | 3,499,037 | 3,499,037 |  |  |  |
Retail Water Gross Profit Percentage | 52.00% | 58.00% |  |  |  |
Retail Water Revenue Percentage | 36.00% | 37.00% |  |  |  |
Plant Capacity |  |  |  | 600,000 | 1,700,000 | 720,000
Non-Cancellable Lease Term Expiration Date | 2032 |  |  |  |  |
Subsequent Event [Member] |  |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |  |
Plant Capacity | 63,000,000 |  |  |  |  |
Retail Segment [Member] |  |  |  |  |  |
Commitments And Contingencies [Line Items] |  |  |  |  |  |
Goodwill | $ 3,499,037 |  |  |  |  |

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- Definition It represents the expiration term of lease agreement. + References No definition available. + Details
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- Definition Plant capacity in million gallons per day. + References No definition available. + Details
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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266 + Details
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- Definition Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6453985&loc=d3e41499-112717 + Details
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