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Note 16 - Retirement Plans (Tables)
12 Months Ended
Dec. 31, 2016
Notes Tables  
Schedule of Allocation of Plan Assets [Table Text Block]
 
 
Quoted Prices
 
 
Observable
 
 
Unobservable
 
 
 
in Active Markets
 
 
Inputs
 
 
Inputs
 
(in thousands)
 
Level 1
 
 
Level 2
 
 
Level 3
 
Money market funds
   
-
     
2,403
     
-
 
Fixed income
   
 
     
120
     
 
 
Mutual funds
   
-
     
3,297
     
-
 
Total
 
$
-
 
 
$
5,820
 
 
$
-