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Repurchase Agreements, Remaining Contractual Maturity (Details) - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Financial Instruments Pledged as Collateral [Abstract]    
Debt securities available-for-sale $ 1,037,965 $ 1,055,728
Securities Sold under Agreements to Repurchase [Member]    
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract]    
Repurchase agreements and repurchase-to-maturity transactions 284,863 240,166
Securities Sold under Agreements to Repurchase [Member] | Asset Pledged as Collateral [Member]    
Financial Instruments Pledged as Collateral [Abstract]    
Debt securities available-for-sale 356,900 292,200
Overnight and Continuous [Member] | Securities Sold under Agreements to Repurchase [Member]    
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract]    
Repurchase agreements and repurchase-to-maturity transactions 148,706 154,093
Up to 30 Days [Member] | Securities Sold under Agreements to Repurchase [Member]    
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract]    
Repurchase agreements and repurchase-to-maturity transactions 0 500
30-90 Days [Member] | Securities Sold under Agreements to Repurchase [Member]    
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract]    
Repurchase agreements and repurchase-to-maturity transactions 2,532 49,300
Greater Than 90 Days [Member] | Securities Sold under Agreements to Repurchase [Member]    
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract]    
Repurchase agreements and repurchase-to-maturity transactions 133,625 36,273
U.S. Treasury and Government Agencies [Member]    
Financial Instruments Pledged as Collateral [Abstract]    
Debt securities available-for-sale 234,613 341,495
U.S. Treasury and Government Agencies [Member] | Securities Sold under Agreements to Repurchase [Member]    
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract]    
Repurchase agreements and repurchase-to-maturity transactions 23,084 56,390
U.S. Treasury and Government Agencies [Member] | Overnight and Continuous [Member] | Securities Sold under Agreements to Repurchase [Member]    
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract]    
Repurchase agreements and repurchase-to-maturity transactions 11,849 23,240
U.S. Treasury and Government Agencies [Member] | Up to 30 Days [Member] | Securities Sold under Agreements to Repurchase [Member]    
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract]    
Repurchase agreements and repurchase-to-maturity transactions 0 11
U.S. Treasury and Government Agencies [Member] | 30-90 Days [Member] | Securities Sold under Agreements to Repurchase [Member]    
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract]    
Repurchase agreements and repurchase-to-maturity transactions 13 7,657
U.S. Treasury and Government Agencies [Member] | Greater Than 90 Days [Member] | Securities Sold under Agreements to Repurchase [Member]    
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract]    
Repurchase agreements and repurchase-to-maturity transactions 11,222 25,482
State and Political Subdivisions [Member]    
Financial Instruments Pledged as Collateral [Abstract]    
Debt securities available-for-sale 263,729 253,557
State and Political Subdivisions [Member] | Securities Sold under Agreements to Repurchase [Member]    
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract]    
Repurchase agreements and repurchase-to-maturity transactions 126,183 120,252
State and Political Subdivisions [Member] | Overnight and Continuous [Member] | Securities Sold under Agreements to Repurchase [Member]    
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract]    
Repurchase agreements and repurchase-to-maturity transactions 108,047 108,775
State and Political Subdivisions [Member] | Up to 30 Days [Member] | Securities Sold under Agreements to Repurchase [Member]    
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract]    
Repurchase agreements and repurchase-to-maturity transactions 0 489
State and Political Subdivisions [Member] | 30-90 Days [Member] | Securities Sold under Agreements to Repurchase [Member]    
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract]    
Repurchase agreements and repurchase-to-maturity transactions 2,038 7,288
State and Political Subdivisions [Member] | Greater Than 90 Days [Member] | Securities Sold under Agreements to Repurchase [Member]    
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract]    
Repurchase agreements and repurchase-to-maturity transactions 16,098 3,700
Agency Mortgage-Backed Securities [Member] | Securities Sold under Agreements to Repurchase [Member]    
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract]    
Repurchase agreements and repurchase-to-maturity transactions 121,077 59,202
Agency Mortgage-Backed Securities [Member] | Overnight and Continuous [Member] | Securities Sold under Agreements to Repurchase [Member]    
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract]    
Repurchase agreements and repurchase-to-maturity transactions 25,506 17,756
Agency Mortgage-Backed Securities [Member] | Up to 30 Days [Member] | Securities Sold under Agreements to Repurchase [Member]    
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract]    
Repurchase agreements and repurchase-to-maturity transactions 0 0
Agency Mortgage-Backed Securities [Member] | 30-90 Days [Member] | Securities Sold under Agreements to Repurchase [Member]    
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract]    
Repurchase agreements and repurchase-to-maturity transactions 481 34,355
Agency Mortgage-Backed Securities [Member] | Greater Than 90 Days [Member] | Securities Sold under Agreements to Repurchase [Member]    
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract]    
Repurchase agreements and repurchase-to-maturity transactions 95,090 7,091
Asset-backed Securities [Member]    
Financial Instruments Pledged as Collateral [Abstract]    
Debt securities available-for-sale 30,524 50,967
Asset-backed Securities [Member] | Securities Sold under Agreements to Repurchase [Member]    
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract]    
Repurchase agreements and repurchase-to-maturity transactions 14,519 4,322
Asset-backed Securities [Member] | Overnight and Continuous [Member] | Securities Sold under Agreements to Repurchase [Member]    
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract]    
Repurchase agreements and repurchase-to-maturity transactions 3,304 4,322
Asset-backed Securities [Member] | Up to 30 Days [Member] | Securities Sold under Agreements to Repurchase [Member]    
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract]    
Repurchase agreements and repurchase-to-maturity transactions 0 0
Asset-backed Securities [Member] | 30-90 Days [Member] | Securities Sold under Agreements to Repurchase [Member]    
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract]    
Repurchase agreements and repurchase-to-maturity transactions 0 0
Asset-backed Securities [Member] | Greater Than 90 Days [Member] | Securities Sold under Agreements to Repurchase [Member]    
Remaining contractual maturity of securities sold under agreements to repurchase by class of collateral pledged [Abstract]    
Repurchase agreements and repurchase-to-maturity transactions $ 11,215 $ 0