Reinsurance (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2018	Apr. 01, 2017
Reinsurance Effect on Premiums Written and Earned
Direct premiums Written	$ 16,703	$ 16,528
Assumed premiums - nonaffiliate Written	24,614	25,332
Ceded premiums - nonaffiliate Written	(12,924)	(12,247)
Net premiums Written	28,393	29,613
Direct premiums Earned	16,493	15,919
Assumed premiums - nonaffiliate Earned	25,010	23,908
Ceded premiums - nonaffiliate Earned	(12,924)	(12,247)
Net premiums Earned	$ 28,579	$ 27,580