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Note 2 - Acquisition (Tables)
9 Months Ended
Dec. 30, 2017
Truitt Bros. Inc. [Member]  
Notes Tables  
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]
Purchase Price (net of cash received
)
  $
31,842
 
         
Approximate fair values of assets acquired and liabilities assumed
:
       
Current asset
s
  $
22,823
 
Other long-term asset
s
   
1,744
 
Property, plant and equipmen
t
   
28,696
 
Current liabilitie
s
   
(5,068
)
Deferred taxe
s
   
389
 
Other long-term liabilitie
s
   
(15,664
)
Bargain purchase gai
n
   
(1,078
)
Tota
l
  $
31,842