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Note 5 - Cash; Cash Equivalents and Restricted Cash (Tables)
3 Months Ended
Mar. 31, 2020
Notes Tables  
Schedule of Cash and Cash Equivalents [Table Text Block]
   

March 31,

   

December 31,

 

 

2020

   

2019

 

Cash and cash equivalents

  $ 55,908     $ 59,977  

Restricted cash

    6,609       7,051  

Total cash, cash equivalents and restricted cash shown in the statement of cash flows

  $ 62,517     $ 67,028