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Income Taxes (Schedule Of Tax Effects Of Temporary Differences That Generated Deferred Tax Assets And Liabilities) (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Oct. 01, 2022
Income Tax Disclosure [Abstract]    
Benefit accruals $ 59,738 $ 65,863
Inventory reserves 28,301 30,053
Tax benefit carryforwards 7,897 10,885
Contract reserves not currently deductible 10,467 10,447
Lease liability 16,342 18,473
Research and development 41,118 0
Other accrued expenses 6,212 14,824
Total gross deferred tax assets 170,075 150,545
Less valuation allowance (6,430) (8,650)
Total net deferred tax assets 163,645 141,895
Differences in bases and depreciation of property, plant and equipment 170,284 167,990
Pension 22,238 28,802
Total gross deferred tax liabilities 192,522 196,792
Net deferred tax liabilities $ (28,877) $ (54,897)