Goodwill and Other Identifiable Intangible Assets, Net (Tables)

3 Months Ended

Dec. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Amortizable Identifiable Intangible Assets

Amortizable identifiable intangible assets were (in thousands):

	December 31, 2015							September 30, 2015
	Gross carrying amount		Accum. amort.			Net		Gross carrying amount		Accum. amort.			Net
Purchased and core technology	$	47,190	$	(45,345	)	$	1,845	$	45,449	$	(45,424	)	$	25
License agreements	18		(4		)	14		18		(4		)	14
Patents and trademarks	11,491		(10,550		)	941		11,377		(10,385		)	992
Customer relationships	17,827		(15,566		)	2,261		17,090		(15,473		)	1,617
Total	$	76,526	$	(71,465	)	$	5,061	$	73,934	$	(71,286	)	$	2,648

Schedule of Estimated Future Amortization Expense Related to Identifiable Intangible Assets

Estimated amortization expense related to identifiable intangible assets for the remainder of fiscal 2016 and the five succeeding fiscal years is (in thousands):

2016 (nine months)	$	1,160
2017	963
2018	574
2019	449
2020	215
2021	69

Schedule of Changes in Carrying Amount of Goodwill

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

	Three months ended December 31,
	2015			2014
Beginning balance, October 1	$	100,183		$	101,484
Acquisition of Bluenica Corporation	11,020			—
Foreign currency translation adjustment	(959		)	(724		)
Ending balance, December 31	$	110,244		$	100,760