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FAIR VALUE OF FINANCIAL ASSETS AND LIABILITIES (Change in Level 3 Assets and Liabilities) (Details 3) - Mortgage revenue bonds
$ in Thousands
9 Months Ended
Sep. 30, 2022
USD ($)
security
Sep. 30, 2021
USD ($)
Dec. 31, 2021
Changes in Level 3 assets and liabilities measured at fair value on a recurring basis      
Aggregate fair value / Balance at the beginning of the period $ 8,619 $ 12,326  
Principal payments received (174) (2,803)  
Unrealized net loss included in other comprehensive income (1,028) (759)  
Aggregate fair value / Balance at the end of the period 7,417 8,764  
States and political subdivisions      
Changes in Level 3 assets and liabilities measured at fair value on a recurring basis      
Aggregate fair value / Balance at the beginning of the period 7,681 11,337  
Principal payments received (157) (2,787)  
Unrealized net loss included in other comprehensive income (842) (714)  
Aggregate fair value / Balance at the end of the period $ 6,682 7,836  
Additional disclosures      
Number of investment securities held | security 2    
Residential - Non-government agencies      
Changes in Level 3 assets and liabilities measured at fair value on a recurring basis      
Aggregate fair value / Balance at the beginning of the period $ 938 989  
Principal payments received (17) (16)  
Unrealized net loss included in other comprehensive income (186) (45)  
Aggregate fair value / Balance at the end of the period $ 735 $ 928  
Additional disclosures      
Number of investment securities held | security 2    
Measurement Input, Discount Rate | Weighted average      
Additional disclosures      
Weighted average prepayment speed assumption 0.0619   0.0346