Investments (Contractual Maturities) (Details) - USD ($) $ in Thousands	Dec. 28, 2019	Mar. 30, 2019
Amortized Cost
Due in less than one year	$ 471
Due after one year through five years	2,081
Due after five years through ten years	262
Due after ten years	2,202
Mortgage-backed securities	5,267
Amortized Cost	10,283	$ 13,443
Fair Value
Due in less than one year	472
Due after one year through five years	2,092
Due after five years through ten years	282
Due after ten years	2,309
Mortgage-backed securities	5,236
Fair Value	$ 10,391	$ 13,408