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Securities - Additional Information (Details)
12 Months Ended
Dec. 31, 2023
USD ($)
Securities
Dec. 31, 2022
USD ($)
Securities
Jan. 01, 2023
USD ($)
Debt and Equity Securities, FV-NI [Line Items]      
Debt Securities, Held-to-Maturity, Fair Value, Total $ 348,791,000 $ 353,901,000  
Allowance for credit loss $ 0   $ 7,200,000
Other-than-temporary Impairment Loss, Debt Securities, Available-for-Sale   $ 0  
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions | Securities 569 611  
US Treasury Securities [Member] | AA or Better [Member]      
Debt and Equity Securities, FV-NI [Line Items]      
Debt Securities, Percent 100.00%    
US States and Political Subdivisions Debt Securities [Member]      
Debt and Equity Securities, FV-NI [Line Items]      
Debt Securities, Held-to-Maturity, Fair Value, Total $ 165,892,000 $ 162,536,000  
US States and Political Subdivisions Debt Securities [Member] | A Rated [Member]      
Debt and Equity Securities, FV-NI [Line Items]      
Debt Securities, Percent 11.00%    
US States and Political Subdivisions Debt Securities [Member] | AA or Better [Member]      
Debt and Equity Securities, FV-NI [Line Items]      
Debt Securities, Percent 86.00%    
US States and Political Subdivisions Debt Securities [Member] | Unrated [Member]      
Debt and Equity Securities, FV-NI [Line Items]      
Debt Securities, Percent 3.00%    
Collateralized Mortgage-Backed Securities [Member]      
Debt and Equity Securities, FV-NI [Line Items]      
Debt Securities, Held-to-Maturity, Fair Value, Total $ 162,533,000 $ 170,605,000  
Collateralized Mortgage-Backed Securities [Member] | A A [Member]      
Debt and Equity Securities, FV-NI [Line Items]      
Debt Securities, Percent 39.00%    
Collateralized Mortgage-Backed Securities [Member] | A A A [Member]      
Debt and Equity Securities, FV-NI [Line Items]      
Debt Securities, Percent 39.00%    
Collateralized Mortgage-Backed Securities [Member] | Unrated [Member]      
Debt and Equity Securities, FV-NI [Line Items]      
Debt Securities, Percent 22.00%    
Reclassified From Available-for-sale Securities [Member]      
Debt and Equity Securities, FV-NI [Line Items]      
Debt Securities, Held-to-Maturity, Fair Value, Total $ 428,400,000    
OCI, Debt Securities, Available-for-Sale, Transfer to Held-to-Maturity, Adjustment from AOCI for Amortization of Gain (Loss), after Tax 2,700,000    
OCI, Debt Securities, Available-for-Sale, Transfer to Held-to-Maturity, Adjustment from AOCI Unamortized, After Tax $ 2,100,000