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Segment Information (Detail) - The following table presents certain operating segment information (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Sep. 30, 2013
Sales:      
Product $ 14,749 $ 15,305  
Service 6,583 5,565  
Total sales 21,332 20,870  
Profit (loss) from operations 340 173  
Assets 48,878 50,814 47,225
Capital expenditures 273 135  
Depreciation and amortization 239 123  
Systems Segment
      
Sales:      
Product 1,006 96  
Service 1,283 957  
Total sales 2,289 1,053  
Profit (loss) from operations 142 (373)  
Assets 15,304 16,914  
Capital expenditures 61 41  
Depreciation and amortization 52 37  
Germany
      
Sales:      
Product 1,401 2,064  
Service 4,188 3,204  
Total sales 5,589 5,268  
Profit (loss) from operations (81) (147)  
Assets 13,134 13,527  
Capital expenditures 87 55  
Depreciation and amortization 46 42  
United Kingdom
      
Sales:      
Product 647 154  
Service 328 302  
Total sales 975 456  
Profit (loss) from operations 31 0  
Assets 3,379 3,524  
Capital expenditures 23 3  
Depreciation and amortization 4 5  
U.S.
      
Sales:      
Product 11,695 12,991  
Service 784 1,102  
Total sales 12,479 14,093  
Profit (loss) from operations 248 693  
Assets 17,061 16,849  
Capital expenditures 102 36  
Depreciation and amortization 137 39  
Total
      
Sales:      
Product 13,743 15,209  
Service 5,300 4,608  
Total sales 19,043 19,817  
Profit (loss) from operations 198 546  
Assets 33,574 33,900  
Capital expenditures 212 94  
Depreciation and amortization $ 187 $ 86