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Investment Securities - Available-for-sale Securities in a Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Marketable Securities [Line Items] |  |
Less than twelve continuous months, fair value | $ 1,724 | $ 1,130
Less than twelve continuous months, unrealized loss | (3) | (14)
Twelve months or more, fair value | 96,376 | 101,730
Twelve months or more, unrealized loss | (17,511) | (16,852)
Total securities in a loss position, fair value | 98,100 | 102,860
Total securities in a loss position, unrealized loss | (17,514) | (16,866)
U.S. government agency securities |  |
Marketable Securities [Line Items] |  |
Less than twelve continuous months, fair value | 199 | 1,130
Less than twelve continuous months, unrealized loss | (1) | (14)
Twelve months or more, fair value | 5,549 | 7,081
Twelve months or more, unrealized loss | (108) | (135)
Total securities in a loss position, fair value | 5,748 | 8,211
Total securities in a loss position, unrealized loss | (109) | (149)
Mortgage-backed securities |  |
Marketable Securities [Line Items] |  |
Less than twelve continuous months, fair value | 1,013 | 0
Less than twelve continuous months, unrealized loss | (2) | 0
Twelve months or more, fair value | 52,686 | 55,609
Twelve months or more, unrealized loss | (11,693) | (11,619)
Total securities in a loss position, fair value | 53,699 | 55,609
Total securities in a loss position, unrealized loss | (11,695) | (11,619)
Obligations of states and political subdivisions |  |
Marketable Securities [Line Items] |  |
Less than twelve continuous months, fair value | 512 | 0
Less than twelve continuous months, unrealized loss | 0 | 0
Twelve months or more, fair value | 36,016 | 36,930
Twelve months or more, unrealized loss | (5,500) | (4,841)
Total securities in a loss position, fair value | 36,528 | 36,930
Total securities in a loss position, unrealized loss | (5,500) | (4,841)
Collateralized mortgage obligations |  |
Marketable Securities [Line Items] |  |
Less than twelve continuous months, fair value | 0 | 0
Less than twelve continuous months, unrealized loss | 0 | 0
Twelve months or more, fair value | 304 | 332
Twelve months or more, unrealized loss | (31) | (35)
Total securities in a loss position, fair value | 304 | 332
Total securities in a loss position, unrealized loss | (31) | (35)
Corporate bonds |  |
Marketable Securities [Line Items] |  |
Less than twelve continuous months, fair value | 0 | 0
Less than twelve continuous months, unrealized loss | 0 | 0
Twelve months or more, fair value | 1,821 | 1,778
Twelve months or more, unrealized loss | (179) | (222)
Total securities in a loss position, fair value | 1,821 | 1,778
Total securities in a loss position, unrealized loss | $ (179) | $ (222)

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- Definition Amount of accumulated unrealized loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for 12 months or longer, without allowance for credit loss. Includes beneficial interest in securitized financial asset. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 320 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481800/320-10-50-7 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 326 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479106/326-30-50-5 + Details
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