Investment Securities (Schedule Of Unrealized Loss On Securities) (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Schedule of Investments [Line Items]
Securities Available-for-Sale, Less than 12 months, Fair value	$ 220,681	$ 86,393
Securities Available-for-Sale, Less than 12 months, Unrealized losses	6,326	695
Securities Available-for-Sale, 12 months or longer, Fair value	4,255	4,727
Securities Available-for-Sale, 12 months or longer, Unrealized losses	32	33
Securities Available-for-Sale, Fair value, Total	224,936	91,120
Securities Available-for-Sale, Unrealized losses, Total	6,358	728
U.S. Government Sponsored Entities Asset-Backed Securities [Member]
Schedule of Investments [Line Items]
Securities Available-for-Sale, Less than 12 months, Fair value	220,681	86,393
Securities Available-for-Sale, Less than 12 months, Unrealized losses	6,326	695
Securities Available-for-Sale, 12 months or longer, Fair value	4,255	4,727
Securities Available-for-Sale, 12 months or longer, Unrealized losses	32	33
Securities Available-for-Sale, Fair value, Total	224,936	91,120
Securities Available-for-Sale, Unrealized losses, Total	$ 6,358	$ 728

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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