XML 66 R59.htm IDEA: XBRL DOCUMENT v3.3.0.814
Goodwill and Intangible Assets - Intangible Assets Subject to Amortization (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Sep. 30, 2015
Sep. 30, 2014
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 154,158 $ 142,180
Accumulated Amortization (106,837) (94,266)
Total $ 47,321 $ 47,914
Average Life 8 years 8 years
Completed technology    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 87,820 $ 87,050
Accumulated Amortization (67,769) (61,189)
Total $ 20,051 $ 25,861
Average Life 5 years 5 years
Customer relationships    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 65,762 $ 55,130
Accumulated Amortization (38,930) (33,077)
Total $ 26,832 $ 22,053
Average Life 12 years 13 years
Trade names    
Finite-Lived Intangible Assets [Line Items]    
Gross Carrying Amount $ 576 $ 0
Accumulated Amortization (138) 0
Total $ 438 $ 0
Average Life 3 years