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N.S.C. Agua, S.A. de C.V. (Details Textual) gal in Millions			1 Months Ended						3 Months Ended	12 Months Ended
	Nov. 06, 2015 gal	May. 15, 2014 USD ($)	May. 31, 2014 USD ($)	Feb. 28, 2014 USD ($)	May. 31, 2013 USD ($)	Nov. 30, 2012 USD ($) m² gal	Feb. 29, 2012 USD ($)	May. 31, 2010 gal	Mar. 31, 2014 USD ($)	Dec. 31, 2015 USD ($) gal	Dec. 31, 2015 MXN gal	Dec. 31, 2014 USD ($)	Dec. 31, 2014 MXN	Dec. 31, 2013 USD ($) ha gal	Dec. 31, 2012 USD ($) ha	Dec. 31, 2015 MXN
Schedule of Investments [Line Items]
General and administrative expenses										$ 14,458,494		$ 16,654,439		$ 15,844,303
Assets, Total										161,616,698		160,459,831
Liabilities, Total										13,421,593		16,377,167
Land										20,600,000
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	456,083	MXN 7,367,875
Minimum [Member]
Schedule of Investments [Line Items]
Delivery Terms, Volume of water per day | gal						20
Maximum [Member]
Schedule of Investments [Line Items]
Delivery Terms, Volume of water per day | gal						40
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										2,200,000		3,700,000		$ 3,200,000
Further Required Payment As Compensation For Operation and Maintenance														500,000
Assets, Total										22,000,000		22,000,000
Liabilities, Total										$ 488,000		214,000
Payments for Compensation for Operation and Maintenance									$ 350,000
Operating Leases, Rent Expense per month						$ 20,000
Land														$ 12,000,000
Area of Land						5,000								12	8.1
Payments to Acquire Land		$ 10,000,000	$ 7,400,000		$ 500,000									$ 2,000,000	$ 500,000
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
Option Agreement Expiration Date							Feb. 07, 2014
N S C Agua [Member] | Mexican Tax Authority [Member] | Letter of Credit [Member]
Schedule of Investments [Line Items]
Irrevocable letter of credit										$ 428,203		$ 456,083				MXN 7,367,875
NSA [Member]
Schedule of Investments [Line Items]
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners								50.00%

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