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Subsequent Events (Narrative) (Details) - Subsequent Event [Member] - Frick Family Foundation (KFS) [Member] - Bank Frick [Member]
$ in Millions
Feb. 03, 2021
USD ($)
Subsequent Event [Line Items]  
Percentage of equity ownership interest disposed 35.00%
Consideration amount from disposal of discontinued operation $ 30.0
Amount payable to terminate all existing arrangements and settle all liabilities 3.6
Receivable Within Two Days From Signing [Member]  
Subsequent Event [Line Items]  
Consideration amount from disposal of discontinued operation 15.0
Consideration amount from disposal of discontinued operation including liabilities 18.6
Receivable On October 30, 2021 [Member]  
Subsequent Event [Line Items]  
Consideration amount from disposal of discontinued operation 7.5
Receivable On July 15, 2022 [Member]  
Subsequent Event [Line Items]  
Consideration amount from disposal of discontinued operation $ 3.9