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Investment Securities - Summary of Investment Securities With Unrealized Losses (Details) $ in Thousands | Dec. 31, 2019 USD ($) Security | Dec. 31, 2018 USD ($) Security
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Schedule Of Available For Sale Securities [Line Items] |  |
Less than Twelve Months Unrealized Losses | $ (56) | $ (73)
Less than Twelve Months Estimated Fair Value | $ 11,410 | $ 6,240
Less than Twelve Months No. of Issuances | Security | 11 | 5
Twelve Months or More Unrealized Losses | $ (39) | $ (1,934)
Twelve Months or More Estimated Fair Value | $ 4,865 | $ 46,498
Twelve Months or More No. of Issuances | Security | 8 | 41
Total Unrealized Losses | $ (95) | $ (2,007)
Total Estimated Fair Value | $ 16,275 | $ 52,738
Available for sale, Total No. of Issuances | Security | 19 | 46
Held to maturity, Less than Twelve Months Unrealized Losses |  | $ (104)
Held to maturity, Less than Twelve Months Estimated Fair Value |  | $ 2,468
Held to maturity, Less than Twelve Months, No. of Issuances | Security |  | 6
Held to maturity, Twelve Months or More Unrealized Losses |  | $ (60)
Held to maturity, Twelve Months or More Estimated Fair Value |  | $ 2,174
Held to maturity, Twelve Months or More, No. of Issuances | Security |  | 4
Held to maturity, Total Unrealized Losses |  | $ (164)
Held to maturity, Total Estimated Fair Value |  | $ 4,642
Held to maturity, Total No. of Issuances | Security |  | 10
Government Agency Securities |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Less than Twelve Months Unrealized Losses | $ (19) |
Less than Twelve Months Estimated Fair Value | $ 1,572 |
Less than Twelve Months No. of Issuances | Security | 2 |
Twelve Months or More Unrealized Losses |  | $ (58)
Twelve Months or More Estimated Fair Value |  | $ 1,815
Twelve Months or More No. of Issuances | Security |  | 2
Total Unrealized Losses | $ (19) | $ (58)
Total Estimated Fair Value | $ 1,572 | $ 1,815
Available for sale, Total No. of Issuances | Security | 2 | 2
SBA Securities |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Less than Twelve Months Unrealized Losses | $ (22) |
Less than Twelve Months Estimated Fair Value | $ 1,469 |
Less than Twelve Months No. of Issuances | Security | 2 |
Twelve Months or More Unrealized Losses |  | $ (185)
Twelve Months or More Estimated Fair Value |  | $ 5,169
Twelve Months or More No. of Issuances | Security |  | 4
Total Unrealized Losses | $ (22) | $ (185)
Total Estimated Fair Value | $ 1,469 | $ 5,169
Available for sale, Total No. of Issuances | Security | 2 | 4
Mortgage-Backed Securities - Government Sponsored Agencies |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Less than Twelve Months Unrealized Losses | $ (5) | $ (12)
Less than Twelve Months Estimated Fair Value | $ 2,631 | $ 1,640
Less than Twelve Months No. of Issuances | Security | 4 | 1
Twelve Months or More Unrealized Losses | $ (24) | $ (572)
Twelve Months or More Estimated Fair Value | $ 3,912 | $ 20,901
Twelve Months or More No. of Issuances | Security | 6 | 23
Total Unrealized Losses | $ (29) | $ (584)
Total Estimated Fair Value | $ 6,543 | $ 22,541
Available for sale, Total No. of Issuances | Security | 10 | 24
Collateralized Mortgage Obligations |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Less than Twelve Months Unrealized Losses | $ (10) |
Less than Twelve Months Estimated Fair Value | $ 5,738 |
Less than Twelve Months No. of Issuances | Security | 3 |
Twelve Months or More Unrealized Losses | $ (15) | $ (631)
Twelve Months or More Estimated Fair Value | $ 953 | $ 12,065
Twelve Months or More No. of Issuances | Security | 2 | 8
Total Unrealized Losses | $ (25) | $ (631)
Total Estimated Fair Value | $ 6,691 | $ 12,065
Available for sale, Total No. of Issuances | Security | 5 | 8
Corporate Debt Securities |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Less than Twelve Months Unrealized Losses |  | $ (61)
Less than Twelve Months Estimated Fair Value |  | $ 4,600
Less than Twelve Months No. of Issuances | Security |  | 4
Twelve Months or More Unrealized Losses |  | $ (488)
Twelve Months or More Estimated Fair Value |  | $ 6,548
Twelve Months or More No. of Issuances | Security |  | 4
Total Unrealized Losses |  | $ (549)
Total Estimated Fair Value |  | $ 11,148
Available for sale, Total No. of Issuances | Security |  | 8
Municipal Securities |  |
Schedule Of Available For Sale Securities [Line Items] |  |
Held to maturity, Less than Twelve Months Unrealized Losses |  | $ (104)
Held to maturity, Less than Twelve Months Estimated Fair Value |  | $ 2,468
Held to maturity, Less than Twelve Months, No. of Issuances | Security |  | 6
Held to maturity, Twelve Months or More Unrealized Losses |  | $ (60)
Held to maturity, Twelve Months or More Estimated Fair Value |  | $ 2,174
Held to maturity, Twelve Months or More, No. of Issuances | Security |  | 4
Held to maturity, Total Unrealized Losses |  | $ (164)
Held to maturity, Total Estimated Fair Value |  | $ 4,642
Held to maturity, Total No. of Issuances | Security |  | 10

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