Securities (Proceeds from Gross Gains on and Gross Losses on Sale of Securities) (Details) - USD ($) $ in Thousands	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019
Investments Debt And Equity Securities [Abstract]
Proceeds	$ 211,919	$ 143,304
Gross gains	1,984
Gross losses	$ 1,496

This item represents the gross profit realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

No definition available.

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