Segment Information - Income by Segment and Reconciliation to Income Before Taxes (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Aug. 01, 2021	Jul. 26, 2020	Aug. 01, 2021	Jul. 26, 2020
Segment Reporting Information [Line Items]
Operating income (loss)	$ 36,660	$ 18,756	$ 64,629	$ 34,524
Items to reconcile segment operating income to consolidated income before taxes and equity in net gains (losses) of equity method investments:
Share-based compensation	11,517	13,186	23,356	22,565
Intangible amortization	1,298	2,020	2,596	4,860
Investment impairments and credit loss reserves	468	1,485	714	5,115
Changes in the fair value of contingent earn-out obligations	0	0	0	(33)
Interest expense	1,185	1,252	2,384	2,811
Non-operating (income) expense, net	(213)	176	(307)	(247)
Income before taxes and equity in net gains (losses) of equity method investments	35,220	15,843	61,838	26,845
Operating Segments
Segment Reporting Information [Line Items]
Operating income (loss)	50,152	34,818	91,621	62,916
Corporate, Non-Segment
Items to reconcile segment operating income to consolidated income before taxes and equity in net gains (losses) of equity method investments:
Share-based compensation	11,517	13,186	23,356	22,565
Intangible amortization	1,298	2,020	2,596	4,860
Investment impairments and credit loss reserves	468	1,485	714	5,115
Changes in the fair value of contingent earn-out obligations	0	0	0	(33)
Restructuring and other reserves	16	502	16	502
Litigation cost, net of recoveries	560	105	1,100	251
Transaction and integration related	101	249	(76)	247
Interest expense	1,185	1,252	2,384	2,811
Non-operating (income) expense, net	(213)	176	(307)	(247)
Semiconductor Products Group
Segment Reporting Information [Line Items]
Operating income (loss)	$ 50,152	$ 34,818	$ 91,621	$ 62,916

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