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Marketable Securities - Schedule of Amortized Cost and Estimated Fair Value of Marketable Securities Classified by Maturity Date (Details) - USD ($)
$ in Thousands
Mar. 28, 2020
Dec. 31, 2019
Available For Sale Securities Debt Maturities Fair Value [Abstract]    
Amortized Cost, Due within one year $ 155,514 $ 152,649
Amortized Cost, Due after one through five years 35,373 36,660
Amortized Cost, Due after five through ten years 0 0
Amortized Cost, Due after ten years 0 0
Amortized Cost 190,887 189,309
Fair Value, Due within one year 155,462 152,852
Fair Value, Due after one through five years 35,167 36,711
Fair Value, Due after five through ten years 0 0
Fair Value, Due after ten years 0 0
Fair Value, Total marketable securities $ 190,629 $ 189,563