v3.26.1
Changes in Accumulated Other Comprehensive Income (Loss) (Parenthetical) (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 28, 2026
Jun. 29, 2025
Jun. 28, 2026
Jun. 29, 2025
Dec. 31, 2025
Dec. 31, 2024
Accumulated Other Comprehensive Income (Loss) [Line Items]            
Amounts reclassified from accumulated other comprehensive income (loss), tax $ 16 $ 72 $ 11 $ (74)    
Foreign currency translation adjustments, tax 0 0 0 0 $ 0 $ 0
Unrealized (losses) gains on marketable securities, tax (1,948) (2,032) (1,948) (2,032) (1,892) (2,174)
Unrealized (Losses) Gains on Cash Flow Hedges 0 0 0 0 0 209
Retirement plans prior service benefit, tax (1,137) (1,135) (1,137) (1,135) $ (1,136) $ (1,134)
Foreign Currency Translation Reclassification Adjustments            
Accumulated Other Comprehensive Income (Loss) [Line Items]            
Other comprehensive income (loss) before reclassifications, tax     0 0    
Amounts reclassified from accumulated other comprehensive income (loss), tax     0 0    
Other comprehensive income (loss), tax     0 0    
Unrealized (Losses) Gains on Marketable Securities            
Accumulated Other Comprehensive Income (Loss) [Line Items]            
Other comprehensive income (loss) before reclassifications, tax     (68) 115    
Amounts reclassified from accumulated other comprehensive income (loss), tax 16 6 12 27    
Other comprehensive income (loss), tax     (56) 142    
Unrealized (Losses) Gains on Cash Flow Hedges            
Accumulated Other Comprehensive Income (Loss) [Line Items]            
Other comprehensive income (loss) before reclassifications, tax     0 (109)    
Amounts reclassified from accumulated other comprehensive income (loss), tax     0 (100)    
Other comprehensive income (loss), tax     0 (209)    
Retirement Plans Prior Service Credit            
Accumulated Other Comprehensive Income (Loss) [Line Items]            
Other comprehensive income (loss) before reclassifications, tax     0 0    
Amounts reclassified from accumulated other comprehensive income (loss), tax $ 0 $ 0 (1) (1)    
Other comprehensive income (loss), tax     $ (1) $ (1)