Reinsurance (Details) - USD ($)
$ in Thousands

3 Months Ended

9 Months Ended

Dec. 30, 2017

Dec. 31, 2016

Dec. 30, 2017

Dec. 31, 2016

Effects of Reinsurance [Line Items]

Supplemental Schedule of Reinsurance Premiums for Insurance Companies [Text Block]

The effects of reinsurance on premiums written and earned are as follows (in thousands):

	Three Months Ended
	December 30, 2017						December 31, 2016
	Written			Earned			Written			Earned
Direct premiums	$	3,796		$	4,120		$	3,735		$	4,008
Assumed premiums—nonaffiliate	5,428			6,296			5,504			6,146
Ceded premiums—nonaffiliate	(2,816		)	(2,816		)	(3,063		)	(3,063		)
Net premiums	$	6,408		$	7,600		$	6,176		$	7,091

Reinsurance Effect on Premiums Written and Earned

Direct premiums Written

$ 3,796

$ 3,735

$ 11,790

$ 11,870

Assumed premiums - nonaffiliate Written

5,428

5,504

17,898

18,603

Ceded premiums - nonaffiliate Written

(2,816)

(3,063)

(10,073)

(9,360)

Net premiums Written

6,408

6,176

19,615

21,113

Direct premiums Earned

4,120

4,008

12,407

11,926

Assumed premiums - nonaffiliate Earned

6,296

6,146

18,889

17,719

Ceded premiums - nonaffiliate Earned

(2,816)

(3,063)

(10,073)

(9,360)

Net premiums Earned

$ 7,600

$ 7,091

$ 21,223

$ 20,285