XML 18 R62.htm IDEA: XBRL DOCUMENT v3.19.3
Investments and Fair Value Measurements Investments and Fair Value Measurements (Investment Maturities) (Details) - USD ($)
$ in Thousands
Sep. 27, 2019
Sep. 28, 2018
Amortized Cost    
Due within 1 year $ 238,186 $ 191,241
Due in 1 to 2 years 93,948 122,131
Due in 2 to 3 years 81,793 67,423
Total 413,927 380,795
Fair Value    
Due within 1 year 238,354 190,541
Due in 1 to 2 years 94,899 120,545
Due in 2 to 3 years 82,957 66,637
Total $ 416,210 $ 377,723