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Concentrations (Details Narrative) (USD $)
3 Months Ended
Dec. 31, 2012
Sep. 30, 2012
Transportation Top Ten Customers
   
Customer revenue concentration 55.80%  
Accounts receivable concentration $ 3,464,000 $ 2,988,000
Transportation Top Customer
   
Customer revenue concentration 21.00%  
Mining Top Customer
   
Customer revenue concentration 73.90%  
Accounts receivable concentration $ 151,000