Non-Governmental Issues Exceeding 10% Shareholders Equity Threshold

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- Definition

Percent Of Average Daily Trading Volume

+ References

No definition available.

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- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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- Definition

Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Amount of Federal Home Loan Bank (FHLB) and Federal Reserve Bank stock.

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No definition available.

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- Definition

The difference between the carrying value and the sale price of an investment. A gain would be recognized when the sale price of the investment is greater than the carrying value of the investment. This element refers to the Gain included in earnings and not to the cash proceeds of the sale.

+ References

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- Definition

Fair value of investment in debt security measured at amortized cost (held-to-maturity), in unrealized loss position.

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- Definition

Balance held at close of period in number of shares.

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- Definition

This item represents an increase to the cumulative amount of credit losses recognized in earnings for an other than temporary impairment (OTTI) of a debt security held for which a previous OTTI was recognized and the investor does not intend to sell the debt security and it is not more likely than not that the investor will be required to sell the debt security before recovery of its amortized cost basis.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Investments (Narrative) (Details) - USD ($)	3 Months Ended
Investments (Narrative) (Details) - USD ($)	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Schedule of Investments [Line Items]
Federal Home Loan Bank Stock and Federal Reserve Bank Stock	$ 16,600,000		$ 15,900,000
Non-Governmental Issues Exceeding 10% Shareholders Equity Threshold	0		0
Debt Securities, Held-to-maturity, Unrealized Loss Position, Fair Value			$ 0
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Additions, Additional Credit Losses	$ 0	$ 0
Percent of average daily trading volume	0.20%		0.20%
Sale of VISA shares	$ 17,837,000	$ 0
Asset Pledged as Collateral [Member]
Schedule of Investments [Line Items]
Debt Securities, Available-for-sale, Restricted	563,000,000		$ 508,000,000
Equity Securities
Schedule of Investments [Line Items]
Equity Securities, FV-NI	10,200,000		$ 12,600,000
VISA, Inc. (VISA) [Member]
Schedule of Investments [Line Items]
Sale of VISA shares	$ 17,800,000
VISA, Inc. (VISA) [Member] \| Common Class B [Member]
Schedule of Investments [Line Items]
Investment Owned, Balance, Shares	86,605
VISA, Inc. (VISA) [Member] \| Equity Securities
Schedule of Investments [Line Items]
Equity Securities, FV-NI	$ 0
Maximum \| First National Corporation (FXNC)
Schedule of Investments [Line Items]
Equity ownership positions in the community bank holding companies	4.00%		4.00%
Maximum \| Eagle Financial Services, Inc. (EFSI)
Schedule of Investments [Line Items]
Equity ownership positions in the community bank holding companies	1.50%		1.50%