Securities (Securities With Unrealized Losses) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	$ 3,050
Less than 12 Months, Unrealized Loss	9
12 Months or More, Fair Value
12 Months or More, Unrealized Loss
Total, Fair Value	3,050
Total, Unrealized Loss	9	$ 0
U.S. Treasury [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	3,050
Less than 12 Months, Unrealized Loss	9
12 Months or More, Fair Value
12 Months or More, Unrealized Loss
Total, Fair Value	3,050
Total, Unrealized Loss	$ 9

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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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 less than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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