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Securities Sold Under Agreements to Repurchase - Schedule of Securities Sold under Agreements to Repurchase and Related Weighted-Average Interest Rates (Details) - USD ($)
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Securities Sold under Agreements to Repurchase [Abstract]    
Outstanding at year-end $ 392,275,000 $ 431,166,000
Average amount outstanding 392,777,000 375,961,000
Maximum amount outstanding at any month-end $ 405,278,000 $ 438,039,000
Weighted-average interest rate during year 0.10% 0.23%
Weighted-average interest rate at end of year 0.10% 0.12%