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Accounts Receivable (Details) (USD $)
Jun. 30, 2013
Dec. 31, 2012
Summary of accounts receivable    
Total gross receivables $ 1,066,986 $ 458,825
Less: allowance for doubtful accounts (174,430) (174,430)
Total net receivables 892,556 284,395
Billed SG Block sales [Member]
    
Summary of accounts receivable    
Total gross receivables 304,181 207,390
Billed Engineering services [Member]
    
Summary of accounts receivable    
Total gross receivables 150,877 216,535
Billed Project management [Member]
    
Summary of accounts receivable    
Total gross receivables $ 611,928 $ 34,900