Investments Investments (Debt Securities by Maturity) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Apr. 01, 2017
Contractual Maturity of Investment Securities
Due in less than one year, Amortized Cost	$ 1,005
Due after one year through five years, Amortized Cost	3,140
Due after five years through ten years, Amortized Cost	1,228
Due after ten years, Amortized Cost	3,385
No single maturity date, Amortized Cost	7,654
Amortized Cost - Available-for sale Debt Securities	16,412
Due in less than one year, Fair Value	990
Due after one year through five years, Fair Value	3,056
Due after five years through ten years, Fair Value	1,197
Due after ten years, Fair Value	3,439
No single maturity date, Fair Value	7,499
Total Fair Value - Available-for-sale Debt Securities	16,181
Collateralized Mortgage Backed Securities [Member]
Contractual Maturity of Investment Securities
Amortized Cost - Available-for sale Debt Securities	7,654	$ 5,646
Total Fair Value - Available-for-sale Debt Securities	$ 7,499	$ 5,559