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N.S.C. Agua, S.A. de C.V. (Details Textual) gal in Millions |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended | 36 Months Ended |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 13, 2016 MXN | Nov. 30, 2015 gal | Feb. 28, 2014 USD ($) | May 31, 2013 USD ($) | Nov. 30, 2012 USD ($) m² | Feb. 29, 2012 USD ($) | May 31, 2010 gal | Sep. 30, 2016 USD ($) | Sep. 30, 2015 USD ($) | Mar. 31, 2014 USD ($) | Sep. 30, 2016 USD ($) | Sep. 30, 2015 USD ($) | Dec. 31, 2015 USD ($) gal | Dec. 31, 2015 MXN gal | Dec. 31, 2013 USD ($) gal | Dec. 31, 2014 USD ($) | Aug. 23, 2016 USD ($) | Aug. 23, 2016 MXN | Dec. 31, 2015 MXN
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General and administrative expenses |  |  |  |  |  |  |  | $ 4,528,679 | $ 3,487,967 |  | $ 13,925,439 | $ 11,042,507 |  |  |  |  |  |  |
Assets, Total |  |  |  |  |  |  |  | 163,289,523 |  |  | 163,289,523 |  | $ 161,575,026 |  |  |  |  |  |
Liabilities, Total |  |  |  |  |  |  |  | 9,915,817 |  |  | 9,915,817 |  | 13,379,921 |  |  |  |  |  |
Legal Fees |  |  |  |  |  |  |  | 18,000 |  |  | 357,000 |  |  |  |  |  |  |  |
Option agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments To Enter Option Agreement |  |  |  |  |  | $ 300,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Mexican Tax Authority [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Tax Examination, Estimate of Possible Loss |  |  |  |  |  |  |  |  |  |  |  |  | 428,203 | MXN 7,367,875 |  |  |  |  |
N S C Agua [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners |  |  |  |  |  |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |
Total Percentage Of Ownership Interest In An Acquired Company |  |  |  | 99.90% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Seawater Reverse Osmosis Desalination Plant Per Day Processing Capacity | gal |  |  |  |  |  |  | 100 |  |  |  |  |  |  |  | 100 |  |  |  |
General and administrative expenses |  |  |  |  |  |  |  | 606,000 | $ 358,000 |  | 2,248,000 | $ 1,370,000 |  |  |  |  |  |  |
Further Required Payment As Compensation For Operation and Maintenance |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 500,000 |  |  |  |
Lease Term |  |  |  |  | 20 years |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets, Total |  |  |  |  |  |  |  | 21,700,000 |  |  | 21,700,000 |  | 22,000,000 |  |  |  |  |  |
Liabilities, Total |  |  |  |  |  |  |  | $ 321,000 |  |  | $ 321,000 |  | $ 488,000 |  |  |  |  |  |
Payments for Compensation for Operation and Maintenance |  |  |  |  |  |  |  |  |  | $ 350,000 |  |  |  |  |  |  |  |  |
Operating Leases, Rent Expense per month |  |  |  |  | $ 20,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of Voting Interest Acquired through Option Agreement |  |  | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments For Option Exercised |  |  | $ 1,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Area of Land | m² |  |  |  |  | 5,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to Acquire Land |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 20,600,000 |  |  |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 485,000,000 | MXN 9,000,000 |
Expected Annual Revenues From Project |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 55,000,000 | MXN 1,020,000 |
N S C Agua [Member] | First Phase [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Seawater Reverse Osmosis Desalination Plant Per Day Processing Capacity | gal |  | 50 |  |  |  |  |  |  |  |  |  |  | 50 | 50 |  |  |  |  |
N S C Agua [Member] | Second Phase [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Seawater Reverse Osmosis Desalination Plant Per Day Processing Capacity | gal |  | 50 |  |  |  |  |  |  |  |  |  |  | 50 | 50 |  |  |  |  |
N S C Agua [Member] | Option agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayment of inter-company loan payable |  |  |  | $ 5,700,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total Voting Interest Percentage After Conversion Of Loan |  |  |  | 99.90% |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of Voting Interest Acquired through Option Agreement |  |  |  |  |  | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Payments For Option Exercised |  |  | $ 1,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
N S C Agua [Member] | Mexican Tax Authority [Member] | Letter of Credit [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Irrevocable letter of credit |  |  |  |  |  |  |  |  |  |  |  |  | $ 428,203 |  |  |  |  |  | MXN 7,367,875
NSA [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners |  |  |  |  |  |  | 50.00% |  |  |  |  |  |  |  |  |  |  |  |
Subsequent Event [Member] | N S C Agua [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Counter Guaranty Fixed Amount | MXN | MXN 300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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