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Note 6. Intangible Assets (Detail) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Sep. 30, 2012
Sep. 30, 2011
Amortization of Intangible Assets $ 749 $ 765
Finite-Lived Intangible Assets, Amortization Expense, Year Two 494  
Finite-Lived Intangible Assets, Amortization Expense, Year Three 376  
Finite-Lived Intangible Assets, Amortization Expense, Year Four 317  
Finite-Lived Intangible Assets, Amortization Expense, Year Five 193  
Finite-Lived Intangible Assets, Amortization Expense, after Year Five 147  
e.Magination Network, LLC [Member]
    
Amortization of Intangible Assets $ 281