Goodwill and other Identifiable Intangible Assets (Tables)

12 Months Ended

Sep. 30, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Amortizable Identifiable Intangible Assets

Amortizable identifiable intangible assets, net as of September 30, 2015 and 2014 are comprised of the following (in thousands):

	September 30, 2015							September 30, 2014
	Gross carrying amount		Accum. amort.			Net		Gross carrying amount		Accum. amort.			Net
Purchased and core technology	$	45,449	$	(45,424	)	$	25	$	45,952	$	(45,162	)	$	790
License agreements	18		(4		)	14		2,440		(2,440		)	—
Patents and trademarks	11,817		(10,568		)	1,249		11,667		(9,799		)	1,868
Customer relationships	18,490		(16,057		)	2,433		18,894		(15,445		)	3,449
Non-compete agreements	1,100		(642		)	458		1,100		(422		)	678
Order backlog	—		—			—		360		(360		)	—
Total	$	76,874	$	(72,695	)	$	4,179	$	80,413	$	(73,628	)	$	6,785

Schedule of Amortization Expense

Amortization expense for fiscal years 2015, 2014 and 2013 is as follows (in thousands):

Fiscal year	Total
2015	$	2,910
2014	$	3,589
2013	$	4,416

Schedule of Estimated Future Amortization Expense Related to Identifiable Intangible Assets

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

Fiscal year	Total
2016	$	1,944
2017	$	1,061
2018	$	487
2019	$	451
2020	$	168

Schedule of Changes in Carrying Amount of Goodwill

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

	Fiscal years ended September 30,
	2015			2014
Beginning balance, October 1	$	103,398		$	103,569
Foreign currency translation adjustment	(1,301		)	(171		)
Ending balance, September 30	$	102,097		$	103,398