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Consolidated Statements of Operations and Comprehensive Loss (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Revenue:    
SG Block sales $ 1,528,158 $ 3,436,904
Engineering services 596,665 121,327
Project management 325,842 406,565
Total revenue 2,450,665 3,964,796
Cost of revenue:    
SG Block sales 1,153,450 2,927,145
Engineering services 499,899 104,348
Project management 344,389 376,425
Total cost revenue 1,997,738 3,407,918
Gross profit 452,927 556,878
Operating expenses:    
Payroll and related expenses 1,357,717 1,084,953
General and administrative expenses 880,774 1,014,212
Marketing and business development expense 85,428 443,857
Pre-project expenses 69,432 72,936
Total 2,393,351 2,615,958
Operating loss (1,940,424) (2,059,080)
Other income (expense):    
Interest expense (8,220) (3,733)
Interest income 139 110
Change in fair value of financial instruments 80,352 (86,122)
Cancellation of trade liabilities and unpaid interest 102,128 239,250
Total 174,399 149,505
Net loss (1,766,025) (1,909,575)
Comprehensive loss    
Foreign currency translation adjustment (571)   
Total comprehensive loss $ (1,766,596) $ (1,909,575)
Net loss per share - basic and diluted:    
Basic and diluted $ (0.04) $ (0.05)
Weighted average shares outstanding:    
Basic and diluted 41,378,216 35,411,704