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Note 16 - Accumulated Other Comprehensive Income (Loss) - Components of Other Comprehensive Loss (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 30, 2023
Dec. 31, 2022
Dec. 25, 2021
Foreign currency translation adjustments, before tax $ 6,256 $ (17,991) $ (22,859)
Foreign currency translation adjustments, tax 559 41 (97)
Foreign currency translation adjustments, net of tax 6,815 (17,950) (22,956)
Adjustments related to postretirement benefits, before tax (2,800) 6,690 2,920
Adjustments related to postretirement benefits, tax 425 (796) (318)
Adjustments related to postretirement benefits, net of tax (2,375) 5,894 2,602
Change in unrealized gain/loss on investments, before tax 793 (694) (67)
Change in unrealized gain/loss on investments, tax 0 0 0
Change in unrealized gain/loss on investments, net of tax 793 (694) (67)
Reclassification due to sale of PBC Test Business, before tax     (2,515)
Reclassification due to sale of PBC Test Business, tax     0
Reclassification due to sale of PBC Test Business, net of tax 0 0 (2,515)
Other comprehensive loss, before tax 4,249 (11,995) (22,521)
Other comprehensive loss, tax 984 (755) (415)
Other comprehensive loss, net of tax $ 5,233 $ (12,750) $ (22,936)