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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			36 Months Ended
	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	Mar. 31, 2016 USD ($)	Mar. 31, 2015 USD ($)	Mar. 31, 2014 USD ($)	Dec. 31, 2015 USD ($) gal	Dec. 31, 2015 MXN gal	Dec. 31, 2013 USD ($) gal	Dec. 31, 2014 USD ($)	Dec. 31, 2015 MXN
Schedule of Investments [Line Items]
General and administrative expenses							$ 4,460,986	$ 3,892,966
Assets, Total							171,323,219			$ 161,575,026
Liabilities, Total							15,201,031			13,379,921
Legal Fees							196,000
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							767,000	$ 537,000
Further Required Payment As Compensation For Operation and Maintenance												$ 500,000
Lease Term				20 years
Assets, Total							22,000,000			22,000,000
Liabilities, Total							$ 502,000			$ 488,000
Payments for Compensation for Operation and Maintenance									$ 350,000
Operating Leases, Rent Expense per month				$ 20,000
Area of Land | m²				5,000
Payments to Acquire Land													$ 20,600,000
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%

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