Goodwill and other Identifiable Intangible Assets (Tables)

12 Months Ended

Sep. 30, 2012

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Amortizable Identifiable Intangible Assets

Amortizable identifiable intangible assets, net as of September 30, 2012 and 2011 are comprised of the following (in thousands):

	September 30, 2012							September 30, 2011
	Gross carrying amount		Accum. amort.			Net		Gross carrying amount		Accum. amort.			Net
Purchased and core technology	$	46,597	$	(43,639	)	$	2,958	$	46,412	$	(41,716	)	$	4,696
License agreements	2,840		(2,682		)	158		2,840		(2,610		)	230
Patents and trademarks	10,943		(8,469		)	2,474		10,341		(7,505		)	2,836
Customer maintenance contracts	700		(700		)	—		700		(674		)	26
Customer relationships	17,504		(12,465		)	5,039		17,437		(10,865		)	6,572
Non-compete agreements	1,045		(1,045		)	—		1,036		(1,036		)	—
Total	$	79,629	$	(69,000	)	$	10,629	$	78,766	$	(64,406	)	$	14,360

Schedule of Amortization Expense

Amortization expense for fiscal years 2012, 2011 and 2010 is as follows (in thousands):

Fiscal year	Total
2012	$	4,476
2011	$	6,171
2010	$	7,484

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
2013	3,728
2014	3,073
2015	2,186
2016	767
2017	220

Schedule of Changes in Carrying Amount of Goodwill

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

	Fiscal years ended September 30,
	2012		2011
Beginning balance, October 1	$	86,012	$	86,210
Foreign currency translation adjustment	197		(198		)
Ending balance, September 30	$	86,209	$	86,012