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Note 18 - Variable Interest Entities (Tables)
12 Months Ended
Dec. 31, 2023
Notes Tables  
Schedule of Subordinated Borrowing [Table Text Block]

(Dollars in thousands)

 Preferred    
  

Securities

    

Trust Name

 

Outstanding

 

Interest Rate

 

Maturity Date

        

Mercantile Bank Capital Trust I

 $21,000 

3 Month SOFR + 218 bps

 

September 16, 2034

        

Firstbank Capital Trust I

 $10,000 

3 Month SOFR + 199 bps

 

October 18, 2034

        

Firstbank Capital Trust II

 $10,000 

3 Month SOFR + 127 bps

 

April 7, 2036

        

Firstbank Capital Trust III

 $7,500 

3 Month SOFR + 135 bps

 

July 30, 2037

        

Firstbank Capital Trust IV

 $7,500 

3 Month SOFR + 135 bps

 

July 30, 2037

Schedule of Variable Interest Entities [Table Text Block]
  

2023

  

2022

 
  

Aggregate

  

Aggregate

      

Aggregate

  

Aggregate

     

(Dollars in thousands)

 

Assets

  

Liabilities

  

Risk of Loss

  

Assets

  

Liabilities

  

Risk of Loss

 
                         

Trust preferred securities

 $58,074  $56,000  $2,074  $58,100  $56,000  $2,100 
                         

Tax Credit Equity Investments

  25,659   21,103   4,556   3,214   1,375   1,839