Goodwill and Acquired Intangible Assets, Net (Tables)

12 Months Ended

Jan. 28, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Finite-Lived Intangible Assets by Major Class

The carrying amounts of acquired intangible assets are as follows (in thousands):

		January 28, 2017							January 30, 2016
	Range of Useful Lives	Gross Carrying Amounts		Accumulated Amortization and Write-Offs			Net Carrying Amounts		Gross Carrying Amounts		Accumulated Amortization and Write-Offs			Net Carrying Amounts
Purchased and core technology	4 - 8 years	$	25,798	$	(22,227	)	$	3,571	$	25,798	$	(17,950	)	$	7,848
Customer intangibles	5 - 7 years	24,700		(24,700		)	—		24,700		(20,601		)	4,099
Total acquired intangible assets from continuing operations, net		$	50,498	$	(46,927	)	$	3,571	$	50,498	$	(38,551	)	$	11,947

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense of Identified Intangibles Excluding IPR&D

Based on the identified intangible assets recorded at January 28, 2017, the future amortization expense of identified intangibles for the next five fiscal years is as follows (in thousands):

Fiscal Year
2018	$	3,571
2019 and thereafter	—
	$	3,571