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NSC Agua (Details Textual) (USD $) | 1 Months Ended | 3 Months Ended | 6 Months Ended |  |  |  |  |  | 1 Months Ended | 3 Months Ended | 6 Months Ended | 36 Months Ended |  |
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Nov. 30, 2012 sqm | Aug. 31, 2012 bbl | May 31, 2010 bbl | Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012 | Dec. 31, 2012 | Mar. 04, 2010 gal | Dec. 31, 2009 gal | Dec. 31, 2007 gal | Nov. 30, 2012 Minimum [Member] gal | Nov. 30, 2012 Maximum [Member] gal | May 31, 2013 N S C Agua [Member] ha | Aug. 31, 2012 N S C Agua [Member] | Feb. 29, 2012 N S C Agua [Member] | Jun. 30, 2013 N S C Agua [Member] | Jun. 30, 2012 N S C Agua [Member] | Jun. 30, 2013 N S C Agua [Member] | Jun. 30, 2012 N S C Agua [Member] | Dec. 31, 2012 N S C Agua [Member] | May 15, 2014 N S C Agua [Member] | May 31, 2010 N S C Agua [Member]
Equity Method Investment, Ownership Percentage |  |  |  | 43.50% |  | 43.50% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 50.00%
Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 99.90% |  |  |  |
Assets |  |  |  | $ 164,289,263 |  | $ 164,289,263 |  | $ 150,449,086 |  |  |  |  |  |  |  |  | $ 13,602,000 |  | $ 13,602,000 |  | $ 1,452,000 |  |
Liabilities |  |  |  | 22,899,804 |  | 22,899,804 |  | 14,314,496 |  |  |  |  |  |  |  |  | 10,207,000 |  | 10,207,000 |  | 116,000 |  |
Seawater Reverse Osmosis Desalination Plant, Per Day Processing Capacity (Gallon) |  | 100,000,000 | 100,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Additional Prepayment Of Purchase Contract |  |  |  |  |  |  |  |  |  |  |  |  |  | 500,000 |  |  |  |  |  |  |  |  |
Further Additional Prepayment Of Purchase Contract |  |  |  |  |  |  |  |  |  |  |  |  |  | 500,000 |  |  |  |  |  |  |  |  |
Further Payment As Compensation For Operation and Maintenance |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 500,000 |  |  |  |  |  |  |  |
Stated Monthly Rent | 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Lease Term | 20 years |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Area Of Land, Lease Space | 5,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Plant Capacity (Gallons) |  |  |  |  |  |  |  |  | 600,000 | 1,700,000 | 720,000 | 20,000,000 | 40,000,000 |  |  |  |  |  |  |  |  |  |
General and Administrative Expense |  |  |  | 3,594,762 | 3,442,283 | 7,163,698 | 6,956,968 |  |  |  |  |  |  |  |  |  | 512,565 | 398,347 | 991,872 | 739,674 | 6,400,000 |  |
Repayment Of Debt Through Issuance Of Shares |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5,700,000 |  |  |  |
Payment For Additional Parcel Of Land |  |  |  |  |  |  |  |  |  |  |  |  |  | 2,000,000 |  |  |  |  |  |  |  |  |
Payments to Acquire Option |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1,000,000 |  |  |  |  |  |  |
Area Of Land Purchased |  |  |  |  |  |  |  |  |  |  |  |  |  | 12 |  |  |  |  |  |  |  |  |
Projected Land Cost |  |  |  |  |  |  |  |  |  |  |  |  |  | 12,000,000 |  |  |  |  |  |  |  |  |
Projected Land Cost Minimum Payments Remainder Of Fiscal Year |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 10,000,000 |
Projected Land Cost Future Minimum Payments Due |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 6,980,000 |
Subsidiary Or Equity Method Investee Additional Ownership Percentage |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 25.00% |  |  |  |  |  |  |

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