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Note 7 - Lease Commitments (Tables)
12 Months Ended
Dec. 31, 2016
Notes Tables  
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]
(in
thousands
)
 
Future Minimum
Payments
 
2017
  $
11,971
 
2018
   
6,149
 
2019
   
4,963
 
2020
   
4,458
 
2021
   
3,756
 
2022 and thereafter
   
8,025
 
    $
39,322