Investments (Gross Unrealized Gains and Losses by Investment Category) (Details) - USD ($) $ in Thousands	Jul. 03, 2021	Apr. 03, 2021
Available-for-Sale Securities by Investment Category
Amortized Cost	$ 17,856	$ 14,823
Gross Unrealized Gains	147	166
Gross Unrealized Losses	(41)	(43)
Available-for-sale debt securities	17,962	14,946
Residential mortgage-backed securities
Available-for-Sale Securities by Investment Category
Amortized Cost	2,609	2,787
Gross Unrealized Gains	26	30
Gross Unrealized Losses	(11)	(13)
Available-for-sale debt securities	2,624	2,804
State and political subdivision debt securities
Available-for-Sale Securities by Investment Category
Amortized Cost	8,265	7,239
Gross Unrealized Gains	109	125
Gross Unrealized Losses	(19)	(19)
Available-for-sale debt securities	8,355	7,345
Corporate debt securities
Available-for-Sale Securities by Investment Category
Amortized Cost	6,982	4,797
Gross Unrealized Gains	12	11
Gross Unrealized Losses	(11)	(11)
Available-for-sale debt securities	$ 6,983	$ 4,797

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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Amount, before tax, of unrealized loss 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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Amortized cost of 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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Amount before tax of unrealized gain in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale.

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Amount of 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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