Annual report pursuant to Section 13 and 15(d)

Acquisitions (Details 4)

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Acquisitions (Details 4) (DeltaWare)
 12 Months Ended 12 Months Ended
Sep. 30, 2012
USD ($)
Sep. 30, 2011
USD ($)
Sep. 30, 2012
CAD
Feb. 10, 2010
USD ($)
Sep. 30, 2012
Profitability targets
USD ($)
Sep. 30, 2011
Profitability targets
USD ($)
Sep. 30, 2012
Sales targets
USD ($)
Sep. 30, 2012
Sales targets
CAD
Feb. 10, 2010
Profitability and Sales Targets
CAD
Acquisition Disclosures                  
Future additional payments                 7,000,000
Contingent consideration payment made         2,100,000 1,000,000      
Contingent consideration, fair value as of acquisition date       3,015,000          
Contingent consideration arrangements related to sale of acquiree products             4,000,000 4,000,000  
Additional estimated consideration, long-term portion 400,000                
Contingent consideration payable based upon sales of acquiree products     1,000,000            
Acquisition-related contingent consideration                  
Balance at the beginning of the period 2,228,000                
Additional estimated consideration 101,000 200,000              
Payment of consideration (2,059,000)                
Foreign currency translation 136,000                
Balance at the end of the period $ 406,000 $ 2,228,000