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Investment Securities - Available-for-Sale and Held-to-Maturity (Details) - USD ($) $ in Thousands | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Schedule Of Investments [Line Items] |  |
Available-for-sale, amortized cost | $ 141,883 | $ 130,676
Available-for-sale, gross unrealized gains | 8 | 977
Available-for-sale, gross unrealized losses | (11,096) | (770)
Investment securities available-for-sale, at fair value | 130,795 | 130,883
Held-to-maturity, amortized cost | 1,862 | 3,436
Held-to-maturity, gross unrealized gains |  | 41
Held-to-maturity, gross unrealized losses | (93) |
Held-to-maturity, estimated fair value | 1,769 | 3,477
Residential Mortgage Backed Securities [Member] |  |
Schedule Of Investments [Line Items] |  |
Available-for-sale, amortized cost | 47,659 | 46,020
Available-for-sale, gross unrealized gains | 2 | 450
Available-for-sale, gross unrealized losses | (3,704) | (242)
Investment securities available-for-sale, at fair value | 43,957 | 46,228
Commercial Mortgage Backed Securities [Member] |  |
Schedule Of Investments [Line Items] |  |
Available-for-sale, amortized cost | 12,169 | 24,647
Available-for-sale, gross unrealized gains | 4 | 371
Available-for-sale, gross unrealized losses | (480) | (47)
Investment securities available-for-sale, at fair value | 11,693 | 24,971
Held-to-maturity, amortized cost | 1,167 | 2,115
Held-to-maturity, gross unrealized gains |  | 29
Held-to-maturity, gross unrealized losses | (41) |
Held-to-maturity, estimated fair value | 1,126 | 2,144
US Government Agencies Debt Securities [Member] |  |
Schedule Of Investments [Line Items] |  |
Available-for-sale, amortized cost | 5,116 | 5,207
Available-for-sale, gross unrealized losses | (846) | (15)
Investment securities available-for-sale, at fair value | 4,270 | 5,192
Held-to-maturity, amortized cost | 610 | 768
Held-to-maturity, gross unrealized gains |  | 10
Held-to-maturity, gross unrealized losses | (40) |
Held-to-maturity, estimated fair value | 570 | 778
US States and Political Subdivisions Debt Securities [Member] |  |
Schedule Of Investments [Line Items] |  |
Available-for-sale, amortized cost | 2,166 | 4,247
Available-for-sale, gross unrealized gains |  | 80
Available-for-sale, gross unrealized losses | (94) | (10)
Investment securities available-for-sale, at fair value | 2,072 | 4,317
Held-to-maturity, amortized cost | 85 | 553
Held-to-maturity, gross unrealized gains |  | 2
Held-to-maturity, gross unrealized losses | (12) |
Held-to-maturity, estimated fair value | 73 | 555
Corporate Note Securities [Member] |  |
Schedule Of Investments [Line Items] |  |
Available-for-sale, amortized cost | 17,817 | 15,458
Available-for-sale, gross unrealized gains | 2 | 76
Available-for-sale, gross unrealized losses | (1,898) | (52)
Investment securities available-for-sale, at fair value | 15,921 | 15,482
US Treasury Securities [Member] |  |
Schedule Of Investments [Line Items] |  |
Available-for-sale, amortized cost | 56,956 | 35,097
Available-for-sale, gross unrealized losses | (4,074) | (404)
Investment securities available-for-sale, at fair value | $ 52,882 | $ 34,693

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- Definition Amount, before tax, of unrealized gain in accumulated other comprehensive income (AOCI) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126970911&loc=d3e27161-111563 + Details
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