Reinsurance (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 30, 2019	Mar. 31, 2018
Reinsurance Effect on Premiums Written and Earned
Direct premiums Written	$ 17,883	$ 16,703
Assumed premiums - nonaffiliate Written	25,479	24,614
Ceded premiums - nonaffiliate Written	(12,526)	(12,924)
Net premiums Written	30,836	28,393
Direct premiums Earned	17,097	16,493
Assumed premiums - nonaffiliate Earned	25,284	25,010
Ceded premiums - nonaffiliate Earned	(12,526)	(12,924)
Net premiums Earned	$ 29,855	$ 28,579