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Other Affiliates (Details Textual) (USD $)
 1 Months Ended 12 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended
Nov. 30, 2012
sqm
Dec. 31, 2012
Dec. 31, 2011
gal
Dec. 31, 2010
Mar. 04, 2010
gal
Dec. 31, 2007
gal
Nov. 30, 2012
Minimum [Member]
gal
Nov. 30, 2012
Maximum [Member]
gal
Dec. 31, 2011
CW-Bermuda [Member]
Dec. 31, 2012
CW-Bermuda [Member]
Aug. 31, 2012
N S C Agua [Member]
May 31, 2010
N S C Agua [Member]
Dec. 31, 2012
N S C Agua [Member]
Dec. 31, 2011
N S C Agua [Member]
Dec. 31, 2010
N S C Agua [Member]
Jul. 19, 2012
N S C Agua [Member]
Equity Method Investment, Ownership Percentage   43.50% 43.50%           40.00%         50.00%    
ASSETS   $ 150,449,086 $ 160,859,431 $ 152,201,566           $ 14,000     $ 1,452,000 $ 121,000    
Liabilities   14,314,496 30,578,075             0     116,000 367,000    
Sales Revenue, Services, Net   469,625 1,040,280 3,542,209         723,000              
Gross profit   21,992,442 19,022,067 16,610,495         457,000              
Seawater Reverse Osmosis Desalination Plant, Per Day Processing Capacity (Gallon)                       100,000,000        
Proceeds from Related Party Debt                         4,000,000      
General and Administrative Expenses   14,542,817 13,651,650 11,329,648                 1,700,000 3,000,000 1,700,000  
Additional Prepayment Of Purchase Contract                               500,000
Further Additional Prepayment Of Purchase Contract                               500,000
Further Payment As Compensation For Operation and Maintenance                     500,000          
Accrued Rent $ 20,000                              
Lease Term 20 Years                              
Area Of Land, Lease Space 5,000                              
Plant Capacity (Gallons)     1,700,000   600,000 720,000 20,000,000 40,000,000                
Equity Method Investment Additional Ownership Interest, Percentage   25.00%