Reinsurance (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Sep. 28, 2013	Sep. 30, 2012	Sep. 28, 2013	Sep. 30, 2012
Reinsurance Effect on Premiums Written and Earned
Direct premiums Written	$ 2,833	$ 1,465	$ 5,741	$ 2,776
Assumed premiums - nonaffiliate Written	4,368	3,320	8,313	6,653
Ceded premiums - nonaffiliate Written	(1,838)	(929)	(3,459)	(1,692)
Net premiums Written	5,363	3,856	10,595	7,737
Direct premiums Earned	2,421	1,011	4,530	1,818
Assumed premiums - nonaffiliate Earned	3,739	2,957	7,216	5,729
Ceded premiums - nonaffiliate Earned	(1,838)	(929)	(3,459)	(1,692)
Net premiums Earned	$ 4,322	$ 3,039	$ 8,287	$ 5,855