N.S.C. Agua, S.A. de C.V. (Details Textual)	3 Months Ended			1 Months Ended			0 Months Ended	1 Months Ended						3 Months Ended		12 Months Ended				3 Months Ended
	Mar. 31, 2015 USD ($)	Mar. 31, 2014 USD ($)	Dec. 31, 2014 USD ($)	Feb. 29, 2012 Option agreement [Member] USD ($)	Nov. 30, 2012 Minimum [Member] gal	Nov. 30, 2012 Maximum [Member] gal	May 15, 2014 N S C Agua [Member] USD ($)	May 31, 2014 N S C Agua [Member] USD ($)	Feb. 28, 2014 N S C Agua [Member] USD ($)	Oct. 31, 2013 N S C Agua [Member] USD ($)	May 31, 2013 N S C Agua [Member] USD ($)	Nov. 30, 2012 N S C Agua [Member] USD ($) sqft	May 31, 2010 N S C Agua [Member] gal	Mar. 31, 2015 N S C Agua [Member] USD ($)	Mar. 31, 2014 N S C Agua [Member] USD ($)	Dec. 31, 2012 N S C Agua [Member] USD ($) ha	Dec. 31, 2014 N S C Agua [Member] USD ($)	Dec. 31, 2013 N S C Agua [Member] ha	Feb. 29, 2012 N S C Agua [Member]	Mar. 31, 2015 N S C Agua [Member] London Interbank Offered Rate (LIBOR) [Member]	Mar. 31, 2015 N S C Agua [Member] Mexican Tax Authority [Member] USD ($)	Mar. 31, 2015 N S C Agua [Member] Mexican Tax Authority [Member] MXN	Mar. 31, 2015 N S C Agua [Member] Mexican Tax Authority [Member] Letter of Credit [Member] MXN
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													100,000,000
General and administrative expenses	$ 3,799,589	$ 5,342,633												$ 561,000	$ 2,000,000
Payments to Acquire Land								7,400,000			500,000					500,000
Further Required Payment As Compensation For Operation and Maintenance										500,000
Project Land Amount Paid							10,000,000
Initial Amount Paid											2,000,000
Repayments of Short-term Debt											5,700,000
Lease Term												20 years
Assets	160,033,680		160,459,831											22,000,000			22,000,000
Liabilities	14,831,523		16,377,167											270,000			214,000
Payments for Compensation for Operation and Maintenance															350,000
Land Subject to Ground Leases												5,000
Restricted Cash and Cash Equivalents	442,955
Operating Leases, Rent Expense per month												20,000
Land											12,000,000
Income Tax Examination, Estimate of Possible Loss																					379,000	5,737,457
Irrevocable letter of credit																							6,712,634
Delivery Terms, Volume of water per day					20,000,000	40,000,000
Percentage of Voting Interest Acquired through Loan Conversion											99.90%
Percentage of Voting Interest Acquired through Option Agreement																			25.00%
Income Tax Examination, Penalties Estimate																						1,639,001
Loss Contingency, Additional Estimated Loss																							975,177
Area of Land																8.1		12
Income Tax Examination Estimate Related To Payments To Foreign Vendor																						3,184,745
Payments For Option Agreement Exercised									1,000,000
Payments To Enter Option Agreement				300,000
Option Agreement Expiration Date				Feb. 07, 2014
Income Tax Examination Surcharges Estimate																					913,711
Loans Payable, Current	$ 8,500,000		$ 9,000,000					$ 10,000,000
Line of Credit Facility, Interest Rate Description																				LIBOR plus 1.5%