Balance Sheet Details (Tables)

12 Months Ended

Sep. 30, 2013

Balance Sheet Details [Abstract]

Schedule Of Goodwill

Changes in the carrying amount of Goodwill during fiscal years 2013 and 2012 are summarized as follows (in thousands):

Balance, September 30, 2011	$	234,691
Acquisition of Traffix Systems	113,210
Other	338
Balance, September 30, 2012	348,239
Acquisition of LineRate Systems	99,560
Acquisition of Versafe	75,937
Other	(9		)
Balance, September 30, 2013	$	523,727

Schedule Of Other Assets

Other assets consist of the following (in thousands):

	September 30,
	2013		2012
Acquired and developed technology and software development costs	$	59,453	$	18,129
Deposits and other	15,251		10,688
Restricted cash	860		179
	$	75,564	$	28,996

Schedule Of Intangible Assets

Intangible assets are included in other assets on the balance sheet and consist of the following (in thousands):

	2013							2012
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Acquired and developed technology and software development costs	$	99,463	$	(40,010	)	$	59,453	$	54,240	$	(36,111	)	$	18,129
Customer relationships	8,399		(3,123		)	5,276		5,379		(2,855		)	2,524
Patents and trademarks	3,044		(2,525		)	519		3,044		(2,464		)	580
Trade names	1,173		(250		)	923		263		(218		)	45
Non-compete covenants	2,160		(200		)	1,960		200		(200		)	—
	$	114,239	$	(46,108	)	$	68,131	$	63,126	$	(41,848	)	$	21,278

Schedule Of Estimated Amortization Expense For Intangible Assets

Estimated amortization expense for intangible assets for the five succeeding fiscal years is as follows (in thousands):

2014	$	8,385
2015	8,372
2016	8,372
2017	5,954
2018	4,554
	$	35,637

Schedule Of Accrued Liabilities

Accrued liabilities consist of the following (in thousands):

	September 30,
	2013		2012
Payroll and benefits	$	73,461	$	61,720
Sales and marketing	3,746		4,407
Income tax accruals	4,196		8,621
Other	11,205		11,661
	$	92,608	$	86,409