Mortgage Loans Held for Sale (Narrative) (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Mortgage Loans Held for Sale (Textual)
Mortgage loans held for sale, fair value	$ 31.6	$ 60.3

Fair value portion of mortgage loans held-for-sale.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant