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Fair Values (Summary of Changes in Level 3 Assets) (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]    
Beginning balance $ 28,092 $ 25,274
Repayments (215) (200)
Unrealized gains (losses) recorded in other comprehensive income (3,013) (1,031)
Ending balance $ 24,864 $ 24,043