Segment Information - Income by Segment and Reconciliation to Income Before Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2021	Oct. 25, 2020	Oct. 31, 2021	Oct. 25, 2020
Segment Reporting Information [Line Items]
Operating income (loss)	$ 37,424	$ 21,482	$ 102,053	$ 56,006
Items to reconcile segment operating income to consolidated income before taxes and equity in net gains of equity method investments:
Share-based compensation	17,341	13,538	40,697	36,103
Intangible amortization	1,298	1,798	3,894	6,658
Investment impairments and credit loss reserves	216	335	930	5,450
Changes in the fair value of contingent earn-out obligations	0	0	0	(33)
Interest expense	1,233	1,008	3,617	3,819
Non-operating (income) expense, net	(105)	236	(412)	(11)
Income before taxes and equity in net gains of equity method investments	36,080	19,903	97,918	46,748
Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	56,957	37,668	148,578	100,584
Corporate, Non-Segment
Items to reconcile segment operating income to consolidated income before taxes and equity in net gains of equity method investments:
Share-based compensation	17,341	13,538	40,697	36,103
Intangible amortization	1,298	1,798	3,894	6,658
Investment impairments and credit loss reserves	216	335	930	5,450
Changes in the fair value of contingent earn-out obligations	0	0	0	(33)
Restructuring and other reserves	0	0	16	502
Litigation cost, net of recoveries	434	558	1,534	809
Transaction and integration related	460	292	384	539
Interest expense	1,233	1,008	3,617	3,819
Non-operating (income) expense, net	(105)	236	(412)	(11)
Semiconductor Products Group
Segment Reporting Information [Line Items]
Operating income (loss)	$ 56,957	$ 37,668	$ 148,578	$ 100,584