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NSC and AdR Project Development (Details Textual) gal in Millions |  | 1 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | ---
Oct. 13, 2016 MXN | Aug. 22, 2016 gal | Nov. 30, 2015 gal | Feb. 28, 2014 USD ($) | May 31, 2013 USD ($) | Nov. 30, 2012 USD ($) | Feb. 29, 2012 USD ($) | May 31, 2010 gal | Sep. 30, 2017 USD ($) | Sep. 30, 2016 USD ($) | Sep. 30, 2017 USD ($) | Sep. 30, 2016 USD ($) | Dec. 31, 2015 gal | Dec. 31, 2014 USD ($) | Sep. 30, 2017 MXN | Dec. 31, 2016 USD ($) | Mar. 31, 2010
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
General and administrative expenses |  |  |  |  |  |  |  |  | $ 4,896,323 | $ 4,528,679 | $ 14,695,184 | $ 13,925,439 |  |  |  |  |
Assets |  |  |  |  |  |  |  |  | 165,840,457 |  | 165,840,457 |  |  |  |  | $ 163,604,528 |
Liabilities |  |  |  |  |  |  |  |  | $ 9,871,482 |  | $ 9,871,482 |  |  |  |  | 9,499,156 |
Equity Method Investment, Ownership Percentage |  |  |  |  |  |  |  |  | 43.53% |  | 43.53% |  |  |  | 43.53% |  |
Option agreement [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments To Enter Option Agreement |  |  |  |  |  |  | $ 300,000 |  |  |  |  |  |  |  |  |  |
N S C Agua [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners |  |  |  |  |  |  |  | 50.00% |  |  |  |  |  |  |  |  | 50.00%
Total Percentage Of Ownership Interest In An Acquired Company |  |  |  |  | 99.99% |  |  |  |  |  |  |  |  |  |  |  |
Seawater Reverse Osmosis Desalination Plant Per Day Processing Capacity | gal |  | 100 |  |  |  |  |  | 100 |  |  |  |  |  |  |  |  |
General and administrative expenses |  |  |  |  |  |  |  |  | $ 864,000 | $ 606,000 | $ 2,469,000 | $ 2,248,000 |  |  |  |  |
Payments to Acquire Land Held-for-use |  |  |  |  |  |  |  |  |  |  | 21,200,000 |  |  |  |  |  |
Lease Term |  |  |  |  |  | 20 years |  |  |  |  |  |  |  |  |  |  |
Assets |  |  |  |  |  |  |  |  | 22,800,000 |  | 22,800,000 |  |  |  |  | 22,300,000 |
Liabilities |  |  |  |  |  |  |  |  | 371,000 |  | 371,000 |  |  |  |  | $ 221,000 |
Operating Leases, Rent Expense, Net |  |  |  |  |  | $ 20,000 |  |  |  |  |  |  |  |  |  |  |
Percentage of Voting Interest Acquired through Option Agreement |  |  |  | 25.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Payments For Option Exercised |  |  |  | $ 1,000,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to Acquire Land |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 20,600,000 |  |  |
Counter Guaranty Fixed Amount | MXN | MXN 300,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures | MXN |  |  |  |  |  |  |  |  |  |  |  |  |  |  | MXN 9,100,000,000 |  |
Expected Annual Revenues From Project | MXN |  |  |  |  |  |  |  |  |  |  |  |  |  |  | MXN 1,790,000,000 |  |
Real Estate Held-for-sale |  |  |  |  |  |  |  |  | 20,560,000 |  | 20,560,000 |  |  |  |  |  |
Finite-Lived Contractual Rights, Gross |  |  |  |  |  |  |  |  | $ 665,000 |  | $ 665,000 |  |  |  |  |  |
N S C Agua [Member] | Aguas de Rosarito S.A.P.I. de C.V [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  |  |  |  | 99.60% |  | 99.60% |  |  |  | 99.60% |  |
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 |  |  |  |  | 99.99% |  |  |  |  |  |  |  |  |  |  |  |
Percentage of Voting Interest Acquired through Option Agreement |  |  |  |  |  |  | 25.00% |  |  |  |  |  |  |  |  |  |
NSA [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners |  |  |  |  |  |  |  | 50.00% |  |  |  |  |  |  |  |  |
ADR [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Payments for Other Deposits |  |  |  |  |  |  |  |  |  |  | $ 665,000 |  |  |  |  |  |

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