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Summary of Significant Accounting Policies (Details 3) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Dec. 31, 2012
Sep. 30, 2012
Dec. 31, 2012
Net sales
Major Customers
item
Dec. 31, 2011
Net sales
Major Customers
item
Dec. 31, 2012
Net sales
Major Customers
Eclipse Aerospace
Dec. 31, 2011
Net sales
Major Customers
Eclipse Aerospace
Dec. 31, 2012
Net sales
Major Customers
AAI
Dec. 31, 2011
Net sales
Major Customers
AAI
Dec. 31, 2012
Inventory purchases
Major Suppliers
item
Dec. 31, 2011
Inventory purchases
Major Suppliers
item
Concentrations                    
Number of major customers     2 2            
Concentrations risk (as a percent)         29.00% 29.00% 13.00% 19.00% 10.00% 10.00%
Number of major suppliers                 1 1
Concentration of Credit Risk                    
Reserves for doubtful accounts $ 0.2 $ 0.2