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Investment Securities and Other Investments - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Schedule Of Investments [Line Items] |  |
Proceeds from sales, calls and maturities of available-for-sale | $ 71,804 | $ 53,595
Proceeds from calls, maturities, sales, paydowns and maturities of securities held to maturity |  | 1,212
Federal home loan bank stock | 1,700 | 5,800
Federal reserve bank stock | 6,100 | 2,200
Correspondent bank stock | 468 | 248
Other equity investments | 14,200 | 3,000
Other investments | 13,643 | 6,565
FHLB [Member] |  |
Schedule Of Investments [Line Items] |  |
Securities pledged | 23,100 | 29,400
Treasury Board Commonwealth of Virginia [Member] |  |
Schedule Of Investments [Line Items] |  |
Securities pledged | $ 8,700 | $ 12,500

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- Definition Federal Home Loan Bank (FHLB) stock represents an equity interest in a FHLB. It does not have a readily determinable fair value because its ownership is restricted and it lacks a market (liquidity). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 325 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=123599499&loc=d3e63345-112809 + Details
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