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Note 5 - Investment in Interest-earning Time Deposits
12 Months Ended
Dec. 31, 2020
Notes to Financial Statements  
Investments and Other Noncurrent Assets [Text Block]
Note
5
Investment in Interest-Earning Time Deposits
 
The investment in interest-earning time deposits as of
December 
31,
2020
and
2019,
by contractual maturity, is shown below (in thousands):
 
   
2020
   
2019
 
Due in one year or less
 
$
4,006
    $
2,026
 
Due after one year through five years
 
 
5,457
     
8,146
 
Total
 
$
9,463
    $
10,172