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Borrowed Funds - Debt Disclosure by Year (Details) - USD ($)
 6 Months Ended 12 Months Ended
Jun. 30, 2023
Dec. 31, 2022
Debt Disclosure [Abstract]    
Securities sold under repurchase agreements, maximum balance $ 99,669,000 $ 125,506,000
FHLB overnight borrowing, maximum balance 402,000,000 486,000,000
FHLB overnight borrowing, maximum balance 1,588,245,000 753,370,000
Securities sold under repurchase agreements, average balance 93,066,000 113,550,000
FHLB overnight borrowing, average balance 223,980,000 139,012,000
FHLB overnight borrowing, average balance $ 1,125,698,000 $ 503,713,000
Securities sold under repurchase agreements, weighted average interest rate 1.41% 0.38%
FHLB overnight borrowing, weighted average interest rate 4.87% 3.32%
FHLB advances, weighted average interest rate 2.78% 0.85%