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Goodwill (Tables)
12 Months Ended
Sep. 30, 2012
Goodwill, Impaired [Abstract]  
Schedule of Goodwill [Table Text Block]

The changes to goodwill during the year ended September 30, 2012 are summarized as follows:

    Contract                    
    Research     Optics     Instruments     Total  
Goodwill at September 30, 2011   $ 4,938,625     $ 1,283,775     $ 6,299,571     $ 12,521,971  
Goodwill impairment on Dynasil Products     -       -       (2,284,499 )     (2,284,499 )
Currency translation on Hilger Crystals     -       16,688       -       16,688  
Goodwill at September 30, 2012   $ 4,938,625     $ 1,300,463     $ 4,015,072     $ 10,254,160