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Note 4 - Revolving Credit Facility (Tables)
9 Months Ended
Dec. 30, 2017
Notes Tables  
Schedule of Line of Credit Facilities [Table Text Block]
   
Third Quarte
r
   
Year-to-Dat
e
 
   
201
8
   
201
7
   
201
8
   
201
7
 
   
(In thousands
)
   
(In thousands
)
 
Reported end of period
:
                               
Outstanding borrowing
s
  $
290,196
    $
232,586
    $
290,196
    $
232,586
 
Weighted average interest rat
e
   
3.04
%
   
2.00
%
   
3.04
%
   
2.00
%
Reported during the period
:
                               
Maximum amount of borrowing
s
  $
296,088
    $
349,710
    $
296,088
    $
361,800
 
Average outstanding borrowing
s
  $
280,960
    $
301,395
    $
246,414
    $
289,949
 
Weighted average interest rat
e
   
2.82
%
   
1.89
%
   
2.59
%
   
1.88
%