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Note 5 - Employee Benefit Plans (Details) - Change in the Postretirement Benefit Obligation (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Mar. 29, 2014
Mar. 30, 2013
Change in the Postretirement Benefit Obligation [Abstract]    
Postretirement benefit obligation, at beginning of fiscal year $ 887 $ 780
Service cost 32 59
Interest cost 38 41
Benefits paid (29) (68)
Actuarial (gain) loss (46) 75
Postretirement benefit obligation, at end of fiscal year 882 887
Funded status, at end of year (882) (887)
Accumulated postretirement benefit obligation, at end of fiscal year $ 882 $ 887