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Fair Value - Assets and Liabilities Recorded at Fair Value on a Nonrecurring Basis (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2022
Mar. 31, 2022
Jun. 30, 2021
Mar. 31, 2021
Jun. 30, 2022
Jun. 30, 2021
Dec. 31, 2021
Fair Value, Measurements, Nonrecurring              
Assets with fair value adjustments on a nonrecurring basis              
Fair value $ 0       $ 0   $ 0
Assets, Fair Value Adjustment $ 0   $ 0   $ 0 $ 0  
Collateral-dependent loans              
Assets with fair value adjustments on a nonrecurring basis              
Total impairment losses   $ 0   $ 0