Nature Of Business And Summary Of Significant Accounting Policies (Schedule Of Deferred Revenue) (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Sep. 30, 2011
Deferred Revenue Arrangement [Line Items]    
Deferred revenue $ 6,560 $ 3,936
Less: Long-term portion of deferred maintenance (265) (113)
Current portion of deferred revenue 6,295 3,823
Maintenance [Member]
   
Deferred Revenue Arrangement [Line Items]    
Deferred revenue 5,167 3,794
License [Member]
   
Deferred Revenue Arrangement [Line Items]    
Deferred revenue 1,257 33
Other [Member]
   
Deferred Revenue Arrangement [Line Items]    
Deferred revenue $ 136 $ 109