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Note 14 - Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2022
Notes Tables  
Schedule of Fair Value, off-Balance-Sheet Risks [Table Text Block]
   

As of December 31,

 
   

2022

   

2021

 
   

(In thousands)

 

Commitments to extend credit

  $ 3,630,304     $ 3,297,362  

Standby letters of credit

    315,821       266,490  

Commercial letters of credit

    29,416       16,652  

Total

  $ 3,975,541     $ 3,580,504