Investments (Amortized cost and fair value) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Apr. 02, 2022
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 19,977	$ 18,270
Fair Value	19,036	17,760
Residential mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2,670	1,668
Fair Value	2,572	1,613
State and political subdivision debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	6,542	10,100
Fair Value	6,228	9,906
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	10,765	6,502
Fair Value	$ 10,236	$ 6,241