Investments (Available-for-sale Summary) (Details) - USD ($) $ in Thousands	Apr. 03, 2021	Mar. 28, 2020
Available-for-Sale Securities by Investment Category
Total Amortized Cost	$ 14,823	$ 14,660
Gross Unrealized Gains	166	208
Gross Unrealized Losses	(43)	(94)
Total Fair Value	14,946	14,774
Residential mortgage-backed securities
Available-for-Sale Securities by Investment Category
Total Amortized Cost	2,787	5,400
Gross Unrealized Gains	30	69
Gross Unrealized Losses	(13)	(26)
Total Fair Value	2,804	5,443
States and political subdivision debt securities
Available-for-Sale Securities by Investment Category
Total Amortized Cost	7,239	4,239
Gross Unrealized Gains	125	134
Gross Unrealized Losses	(19)	(3)
Total Fair Value	7,345	4,370
Corporate debt securities
Available-for-Sale Securities by Investment Category
Total Amortized Cost	4,797	5,021
Gross Unrealized Gains	11	5
Gross Unrealized Losses	(11)	(65)
Total Fair Value	$ 4,797	$ 4,961

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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