Reinsurance (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 28, 2019	Sep. 29, 2018	Sep. 28, 2019	Sep. 29, 2018
Reinsurance Effect on Premiums Written and Earned
Direct premiums Written	$ 4,179	$ 3,820	$ 9,212	$ 8,361
Assumed premiums - nonaffiliate Written	6,760	6,280	14,273	13,214
Ceded premiums - nonaffiliate Written	(3,029)	(3,135)	(6,016)	(5,982)
Net premiums Written	7,910	6,965	17,469	15,593
Direct premiums Earned	4,653	4,249	9,223	8,460
Assumed premiums - nonaffiliate Earned	6,592	6,350	13,027	12,584
Ceded premiums - nonaffiliate Earned	(3,029)	(3,135)	(6,016)	(5,982)
Premiums Earned, Net	$ 8,216	$ 7,464	$ 16,234	$ 15,062