XML 68 R48.htm IDEA: XBRL DOCUMENT v3.20.2
Note 5 - Financial Instruments Measured at Fair Value - Effective Maturities of Short-term Investments (Details) - USD ($)
$ in Thousands
Sep. 26, 2020
Dec. 28, 2019
Due in one year or less, amortized cost $ 949 $ 0
Due in one year or less, fair value 949 0
Due after one year through three years, amortized cost 0 904
Due after one year through three years, fair value 0 904
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Amortized Cost, Total 949 904
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Fair Value, Total $ 949 $ 904