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Note 7 - Lease Information (Tables)
12 Months Ended
Jan. 31, 2019
Notes Tables  
Schedule of Capital Leased Assets [Table Text Block]
Property under capitalized leases (in thousands)
 
2018
 
2017
Machinery and equipment
  $
855
 
  $
1,729
 
Transportation equipment
   
8
 
   
9
 
Subtotal
   
863
 
   
1,738
 
Less accumulated amortization
   
355
 
   
699
 
Total
 
$
508
 
 
$
1,039
 
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]
(In thousands)
 
Operating Leases
 
Capital Leases
2019
  $
2,516
 
  $
241
 
2020
   
2,193
 
   
240
 
2021
   
2,149
 
   
82
 
2022
   
2,110
 
   
21
 
2023
   
1,979
 
   
 
Thereafter
   
8,997
 
   
 
Subtotal
   
19,944
 
   
584
 
Less Amount representing interest
   
 
   
(48
)
Future minimum lease payments
  $
19,944
 
  $
536