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Reclassifications Out of Accumulated Other Comprehensive Income (Loss) to Statements of Operations (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jul. 02, 2023
Jul. 03, 2022
Jul. 02, 2023
Jul. 03, 2022
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Interest income (expense) $ (28) $ (274) $ (33) $ (209)
Unrealized losses, net of tax (323) 0 (1,524) 0
Unrealized Gains on Marketable Securities        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Interest income (expense) (28) (274) (33) (209)
Reclassifications, net of tax     (33) (209)
Amortization of Prior Service Credit        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Reclassifications, net of tax 2 2 3 3
Accumulated Other Comprehensive Income (Loss)        
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]        
Reclassifications, net of tax $ (349) $ (272) $ (1,554) $ (206)