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Securities (Narrative) (Details)	12 Months Ended
	Dec. 31, 2021 USD ($) security	Dec. 31, 2020 USD ($) security	Dec. 31, 2019 USD ($) security
Schedule of Available-for-sale Securities [Line Items]
Other-than-temporary impairment | $	$ 0	$ 0
Sales of securities | $	$ 0	$ 0	$ 0
Holdings of securities greater than 10% of stockholders' equity | security	0	0	0
Securities with unrealized losses | security		0
Issued by U.S. government-sponsored entities and agencies
Schedule of Available-for-sale Securities [Line Items]
Minimum percentage of securities held	10.00%	10.00%	10.00%

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Minimum percentage of securities hold.

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Number Of Holdings Of Securities Greater Than Ten Percent

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Accumulated other comprehensive loss related to portion of other than temporary impairment (OTTI) due to factors other than credit losses on debt securities categorized as available-for-sale that an entity does not intend to sell and which it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis of the debt security. The amount represented by this item is net of tax, as applicable.

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Number of investments in debt securities measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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Amount of cash inflow from sale 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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