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Goodwill and Other Identifiable Intangible Assets, Net (Tables)
6 Months Ended
Mar. 31, 2015
Goodwill and Intangible Assets Disclosure [Abstract]  
Schedule of Amortizable Identifiable Intangible Assets
Amortizable identifiable intangible assets were (in thousands):
 
March 31, 2015
 
September 30, 2014
 
Gross
carrying
amount
 
Accum.
amort.
 
Net
 
Gross
carrying
amount
 
Accum.
amort.
 
Net
Purchased and core technology
$
45,298

 
$
(44,949
)
 
$
349

 
$
45,952

 
$
(45,162
)
 
$
790

License agreements

 

 

 
2,440

 
(2,440
)
 

Patents and trademarks
11,830

 
(10,302
)
 
1,528

 
11,667

 
(9,799
)
 
1,868

Customer relationships
18,371

 
(15,468
)
 
2,903

 
18,894

 
(15,445
)
 
3,449

Non-compete agreements
1,100

 
(532
)
 
568

 
1,100

 
(422
)
 
678

Order backlog

 

 

 
360

 
(360
)
 

Total
$
76,599

 
$
(71,251
)
 
$
5,348

 
$
80,413

 
$
(73,628
)
 
$
6,785

Schedule of Estimated Amortization Expense Related to Identifiable Intangible Assets
Estimated amortization expense related to identifiable intangible assets for the remainder of fiscal 2015 and the five succeeding fiscal years is (in thousands):
2015 six months
$
1,378

2016
1,927

2017
901

2018
482

2019
438

2020
168

Schedule of Changes in Carrying Amount of Goodwill
The changes in the carrying amount of goodwill are (in thousands):
 
Six months ended
March 31,
 
2015
 
2014
Beginning balance, October 1
$
103,398

 
$
103,569

Foreign currency translation adjustment
(1,656
)
 
476

Ending balance, March 31
$
101,742

 
$
104,045