Goodwill and other Identifiable Intangible Assets (Tables)

12 Months Ended

Sep. 30, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Amortizable Identifiable Intangible Assets

Amortizable identifiable intangible assets, net as of September 30, 2014 and 2013 are comprised of the following (in thousands):

	September 30, 2014							September 30, 2013
	Gross carrying amount		Accum. amort.			Net		Gross carrying amount		Accum. amort.			Net
Purchased and core technology	$	45,952	$	(45,162	)	$	790	$	45,960	$	(44,306	)	$	1,654
License agreements	2,440		(2,440		)	—		2,440		(2,440		)	—
Patents and trademarks	11,667		(9,799		)	1,868		11,322		(9,000		)	2,322
Customer relationships	18,894		(15,445		)	3,449		18,954		(14,130		)	4,824
Non-compete agreements	1,100		(422		)	678		1,100		(202		)	898
Order backlog	360		(360		)	—		360		(330		)	30
Total	$	80,413	$	(73,628	)	$	6,785	$	80,136	$	(70,408	)	$	9,728

Schedule of Amortization Expense

Amortization expense for fiscal years 2014, 2013 and 2012 is as follows (in thousands):

Fiscal year	Total
2014	$	3,589
2013	$	4,416
2012	$	4,476

Schedule of Estimated Amortization Expense Related to Identifiable Intangible Assets

Estimated amortization expense for the next five years is as follows (in thousands):

Fiscal year	Total
2015	$	3,053
2016	$	1,795
2017	$	795
2018	$	482
2019	$	438

Schedule of Changes in Carrying Amount of Goodwill

The changes in the carrying amount of goodwill were (in thousands):

	Fiscal years ended September 30,
	2014			2013
Beginning balance, October 1	$	103,569		$	86,209
Acquisition of Etherios, Inc.	—			17,282
Foreign currency translation adjustment	(171		)	78
Ending balance, September 30	$	103,398		$	103,569