Goodwill and other Identifiable Intangible Assets (Tables)

9 Months Ended

Jun. 30, 2012

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Amortizable Identifiable Intangible Assets

Amortizable identifiable intangible assets were (in thousands):

	December 31, 2012							September 30, 2012
	Gross carrying amount		Accum. amort.			Net		Gross carrying amount		Accum. amort.			Net
Purchased and core technology	$	46,603	$	(43,933	)	$	2,670	$	46,597	$	(43,639	)	$	2,958
License agreements	2,840		(2,701		)	139		2,840		(2,682		)	158
Patents and trademarks	11,550		(8,746		)	2,804		10,943		(8,469		)	2,474
Customer maintenance contracts	700		(700		)	—		700		(700		)	—
Customer relationships	18,929		(12,884		)	6,045		17,504		(12,465		)	5,039
Non-compete agreements	2,144		(1,081		)	1,063		1,045		(1,045		)	—
Order backlog	360		(60		)	300		—		—			—
Total	$	83,126	$	(70,105	)	$	13,021	$	79,629	$	(69,000	)	$	10,629

Schedule of Estimated Amortization Expense Related to Identifiable Intangible Assets

Estimated amortization expense related to identifiable intangible assets for the remainder of fiscal 2013 and the five succeeding fiscal years is (in thousands):

2013 (nine months)	$	3,393
2014	3,758
2015	2,611
2016	1,417
2017	700
2018	482

Schedule of Changes in Carrying Amount of Goodwill

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

	Three months ended December 31,
	2012		2011
Beginning balance, October 1	$	86,209	$	86,012
Acquisition of Etherios, Inc.	17,120		—
Foreign currency translation adjustment	62		(405		)
Ending balance, December 31	$	103,391	$	85,607