Investments (Amortized cost and fair value) (Details) - USD ($) $ in Thousands	Oct. 01, 2022	Apr. 02, 2022
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 20,523	$ 18,270
Fair Value	19,488	17,760
Residential mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	3,161	1,668
Fair Value	3,059	1,613
State and political subdivision debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	6,560	10,100
Fair Value	6,208	9,906
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	10,802	6,502
Fair Value	$ 10,221	$ 6,241