Note 5 - Employee Benefit Plans (Details) - The change in the postretirement benefit obligation is as follows: (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Mar. 30, 2013	Mar. 31, 2012
The change in the postretirement benefit obligation is as follows: [Abstract]
Postretirement benefit obligation, at beginning of fiscal year	$ 780	$ 706
Service cost	59	127
Interest cost	41	40
Benefits paid	(68)	(12)
Actuarial loss	75	71
Curtailment gain		(152)
Postretirement benefit obligation, at end of fiscal year	887	780
Funded status, at end of year	(887)	(780)
Accumulated postretirement benefit obligation, at end of fiscal year	$ 887	$ 780