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Goodwill (Tables)
 12 Months Ended
Sep. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Goodwill [Table Text Block]
The changes to goodwill during the years ended September 30, 2014 and 2013 are summarized as follows:
 
 
 
Contract
 
 
 
 
 
 
 
 
 
 
 
 
Research
 
Optics
 
Instruments
 
Total
 
Goodwill at September 30, 2012
 
$
4,939,000
 
$
1,300,000
 
$
4,015,000
 
$
10,254,000
 
Goodwill impairment on Instruments
 
 
-
 
 
-
 
 
(4,015,000)
 
 
(4,015,000)
 
Currency translation on Hilger Crystals
 
 
-
 
 
2,000
 
 
-
 
 
2,000
 
Goodwill at September 30, 2013
 
$
4,939,000
 
$
1,302,000
 
$
-
 
$
6,241,000
 
Goodwill impairment on Instruments
 
 
-
 
 
-
 
 
-
 
 
-
 
Currency translation on Hilger Crystals
 
 
 
 
 
6,000
 
 
 
 
 
6,000
 
Goodwill at September 30, 2014
 
$
4,939,000
 
$
1,308,000
 
$
-
 
$
6,247,000