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Accounts Receivable, Short-Term and Long-Term Notes Receivable (Details) (USD $)
Dec. 31, 2014
Dec. 31, 2013
Customer Notes Receivable    
Current, gross $ 756,488us-gaap_NotesReceivableGross  
Long-Term, gross 1,028,805us-gaap_NotesAndLoansReceivableGrossNoncurrent  
Current Reserve 286,571us-gaap_FinancingReceivableAllowanceForCreditLosses  
Long-Term Reserve 349,954us-gaap_AllowanceForNotesAndLoansReceivableNoncurrent  
Current, net 469,917us-gaap_NotesReceivableNet  
Long-Term 678,851us-gaap_NotesAndLoansReceivableNetNoncurrent   
Accounts Receivable    
Current, gross 342,304us-gaap_AccountsReceivableGross  
Current Reserve 188,527us-gaap_AllowanceForDoubtfulAccountsReceivable  
Current, net $ 153,777us-gaap_AccountsReceivableNet