Condensed Consolidated Statements Of Comprehensive Income (unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2021	Oct. 25, 2020	Oct. 31, 2021	Oct. 25, 2020
Net income	$ 34,425	$ 18,482	$ 90,854	$ 44,236
Other comprehensive income (loss), net:
Unrealized gain on available-for-sale securities	0	0	0	386
Reclassification of realized gain on available-for-sale securities, net to net income	0	0	0	(757)
Change in defined benefit plans, net	158	202	472	581
Other comprehensive income (loss), net:	693	222	1,370	(953)
Comprehensive income	35,118	18,704	92,224	43,283
Comprehensive loss attributable to noncontrolling interest	(2)	(5)	(6)	(11)
Comprehensive income attributable to common stockholders	35,120	18,709	92,230	43,294
Foreign Exchange Contract
Other comprehensive income (loss), net:
Unrealized gain (loss) on cash flow hedges, net	0	173	0	531
Reclassifications of realized (gain) loss on cash flow hedges, net to net income	0	(244)	0	(238)
Interest Rate Swap
Other comprehensive income (loss), net:
Unrealized gain (loss) on cash flow hedges, net	(388)	(82)	341	(1,702)
Reclassifications of realized (gain) loss on cash flow hedges, net to net income	$ 923	$ 173	$ 557	$ 246