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Commitments and Contingencies: (Details 2) (USD $)
0 Months Ended 0 Months Ended 12 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Sep. 30, 2011
Breach of contract and violation of the Pennsylvania Wage Payment and Collection Law
Pending lawsuit
Sep. 30, 2013
Breach of contract and violation of the Pennsylvania Wage Payment and Collection Law
Pending lawsuit
Dec. 17, 2013
American Airlines, Inc. ("AAI")
Sep. 30, 2013
American Airlines, Inc. ("AAI")
Nov. 29, 2011
American Airlines, Inc. ("AAI")
Sep. 30, 2013
Net sales
Major Customers
Sep. 30, 2012
Net sales
Major Customers
Sep. 30, 2011
Net sales
Major Customers
Sep. 30, 2013
Net sales
Major Customers
American Airlines, Inc. ("AAI")
Sep. 30, 2012
Net sales
Major Customers
American Airlines, Inc. ("AAI")
Sep. 30, 2011
Net sales
Major Customers
American Airlines, Inc. ("AAI")
Legal Proceedings                          
Concentration of risk (as a percent)               64.00% 63.00% 61.00% 14.00% 5.00% 8.00%
Pre-bankruptcy outstanding accounts receivable $ 4,489,434 $ 3,978,512       $ 760,000 $ 760,000            
Collection of accounts receivable         760,000                
Amount of damages claimed     583,000                    
Estimated liability       $ 657,000