Investments (Available-for-sale Summary) (Details) - USD ($) $ in Thousands	Mar. 30, 2019	Mar. 31, 2018
Available-for-Sale Securities by Investment Category
Total Amortized Cost	$ 13,443	$ 16,412
Gross Unrealized Gains	123	110
Gross Unrealized Losses	(158)	(341)
Total Fair Value	13,408	16,181
U.S. Treasury and government debt securities
Available-for-Sale Securities by Investment Category
Total Amortized Cost	300	300
Gross Unrealized Gains	0	0
Gross Unrealized Losses	(3)	(7)
Total Fair Value	297	293
Residential mortgage-backed securities
Available-for-Sale Securities by Investment Category
Total Amortized Cost	6,625	7,654
Gross Unrealized Gains	3	0
Gross Unrealized Losses	(119)	(155)
Total Fair Value	6,509	7,499
States and political subdivision debt securities
Available-for-Sale Securities by Investment Category
Total Amortized Cost	4,883	6,377
Gross Unrealized Gains	117	109
Gross Unrealized Losses	(17)	(149)
Total Fair Value	4,983	6,337
Corporate debt securities
Available-for-Sale Securities by Investment Category
Total Amortized Cost	1,635	2,081
Gross Unrealized Gains	3	1
Gross Unrealized Losses	(19)	(30)
Total Fair Value	$ 1,619	$ 2,052

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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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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