Securities (Amortized Cost And Fair Value Of Available-For-Sale Securities Portfolio) (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 17,081	$ 8,579
Gross Unrealized Gains	56	122
Gross Unrealized Losses	9
Fair Value	17,128	8,701
Corporate Debt [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	9,976
Gross Unrealized Gains
Gross Unrealized Losses
Fair Value	9,976
U.S. Treasury [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	7,065	8,517
Gross Unrealized Gains	54	119
Gross Unrealized Losses	9
Fair Value	7,110	8,636
Mortgage-Backed Securities - Residential [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	40	62
Gross Unrealized Gains	2	3
Gross Unrealized Losses
Fair Value	$ 42	$ 65

Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, before tax, of unrealized loss in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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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).

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