Goodwill and Other Intangibles (Summary of Goodwill and Other Intangibles) (Details) - USD ($) $ in Thousands	Sep. 29, 2018	Mar. 31, 2018
Indefinite lived:
Gross Carrying Amount	$ 81,220	$ 81,220
Net Carrying Amount	81,220	81,220
Finite lived:
Intangible Assets Including Goodwill Gross	89,704	89,704
Accumulated Amortization	(6,848)	(6,684)
Intangible Assets, Net (Including Goodwill)	82,856	83,020
Customer relationships [Member]
Finite lived:
Gross Carrying Amount	7,100	7,100
Accumulated Amortization	(5,863)	(5,756)
Net Carrying Amount	1,237	1,344
Other Intangible Assets [Member]
Finite lived:
Gross Carrying Amount	1,384	1,384
Accumulated Amortization	(985)	(928)
Net Carrying Amount	399	456
Goodwill [Member]
Acquired Finite and Indefinite Lived Intangible Assets [Line Items]
Goodwill	72,920	72,920
Trademarks and trade names [Member]
Acquired Finite and Indefinite Lived Intangible Assets [Line Items]
Indefinite lived intangible assets including goodwill.	7,200	7,200
State insurance licenses [Member]
Acquired Finite and Indefinite Lived Intangible Assets [Line Items]
Indefinite lived intangible assets including goodwill.	$ 1,100	$ 1,100