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Securities - Additional Information (Details) | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 USD ($) security item | Dec. 31, 2019 USD ($)
Additional Information |  |
The number of holdings of securities of any one issuer other than the U.S. Government and its sponsored entities | security | 0 |
Holdings of securities as percentage of shareholders' equity, considered as threshold for disclosure purpose | 10.00% |
Number of securities held | item | 407 |
Number of available for sale securities held | item | 116 |
Number of held to maturity securities held | item | 291 |
Number of securities with fair values below amortized cost | item | 5 |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value | $ | $ 30,930,000 | $ 139,744,000
Total unrealized loss for securities less than 12 months | $ | (230,000) |
Agency mortgage-backed securities |  |
Additional Information |  |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value | $ | $ 30,930,000 | 138,188,000
Municipals - exempt from Federal tax |  |
Additional Information |  |
Held-to-maturity Securities, Continuous Unrealized Loss Position, Fair Value | $ |  | $ 1,556,000

X
- Definition Amount of accumulated unrealized loss on investments in debt securities classified as available-for-sale and held-to-maturity that have been in a continuous loss position for less than twelve months. + References No definition available. + Details
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X
- Definition Number of investment positions in available-for-sale and held-to-maturity investments in a continuous unrealized loss position for which an other-than-temporary impairment (OTTI) has not been recognized in the income statement. + References No definition available. + Details
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- Definition Represents the holdings of securities as percentage of shareholders' equity, considered as threshold for disclosure purpose. + References No definition available. + Details
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- Definition Represents the number of investment positions in the available-for-sale investments as of the balance sheet date. + References No definition available. + Details
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- Definition Represents the number of investment positions in the held to maturity investments as of the balance sheet date. + References No definition available. + Details
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- Definition Represents the number of holdings of securities of any one issuer other than the U.S. Government and its sponsored entities, in the amount greater than 10% of shareholders' equity. + References No definition available. + Details
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- Definition Fair value of investment in debt security measured at amortized cost (held-to-maturity), in unrealized loss position. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27290-111563 + Details
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