Investment Securities (Schedule of Gross Realized Gains (Losses) on Sales of Available-For-Sale Debt Securities) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Securities Financing Transactions Disclosures [Abstract]
Realized gains	$ 79	$ 150	$ 79	$ 405
Realized losses				(12)
Net gains	$ 79	$ 150	$ 79	$ 393

This item represents the difference between the gross realized gains and losses realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities.

No definition available.

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration