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Investments Securities - Company's Investment Securities With Unrealized Losses, Aggregated by Type and Length (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Securities available-for-sale, Fair Value |  |
Fair Value , Less Than 1 Year | $ 83,108 | $ 53,894
Fair Value, Over 1 Year | 42,745 | 124,939
Fair Value | 125,853 | 178,833
Securities available-for-sale, Unrealized Losses |  |
Gross unrealized losses, Less Than 1 Year | 652 | 367
Gross unrealized losses, Over 1 Year | 431 | 3,120
Unrealized Losses | 1,083 | 3,487
Securities held-to-maturity, Fair Value |  |
Fair Value, Less Than 1 Year | 0 | 4,018
Fair Value, Over 1 Year | 0 | 2,839
Fair Value | 0 | 6,857
Securities held-to-maturity, Unrealized Losses |  |
Gross unrealized losses, Less Than 1 Year | 0 | 5
Gross unrealized losses, Over 1 Year | 0 | 37
Unrealized Losses | 0 | 42
U.S. agency mortgage-backed |  |
Securities available-for-sale, Fair Value |  |
Fair Value , Less Than 1 Year | 28,847 | 23,086
Fair Value, Over 1 Year | 5,148 | 36,690
Fair Value | 33,995 | 59,776
Securities available-for-sale, Unrealized Losses |  |
Gross unrealized losses, Less Than 1 Year | 292 | 171
Gross unrealized losses, Over 1 Year | 63 | 892
Unrealized Losses | 355 | 1,063
Collateralized mortgage obligations |  |
Securities available-for-sale, Fair Value |  |
Fair Value , Less Than 1 Year | 50,004 | 24,941
Fair Value, Over 1 Year | 37,131 | 81,442
Fair Value | 87,135 | 106,383
Securities available-for-sale, Unrealized Losses |  |
Gross unrealized losses, Less Than 1 Year | 300 | 161
Gross unrealized losses, Over 1 Year | 358 | 2,191
Unrealized Losses | 658 | 2,352
Municipal bonds |  |
Securities available-for-sale, Fair Value |  |
Fair Value , Less Than 1 Year | 3,044 | 5,018
Fair Value, Over 1 Year | 0 | 2,833
Fair Value | 3,044 | 7,851
Securities available-for-sale, Unrealized Losses |  |
Gross unrealized losses, Less Than 1 Year | 56 | 16
Gross unrealized losses, Over 1 Year | 0 | 12
Unrealized Losses | 56 | 28
Securities held-to-maturity, Fair Value |  |
Fair Value, Less Than 1 Year | 0 | 4,018
Fair Value, Over 1 Year | 0 | 2,839
Fair Value | 0 | 6,857
Securities held-to-maturity, Unrealized Losses |  |
Gross unrealized losses, Less Than 1 Year | 0 | 5
Gross unrealized losses, Over 1 Year | 0 | 37
Unrealized Losses | 0 | 42
U.S. government agency |  |
Securities available-for-sale, Fair Value |  |
Fair Value , Less Than 1 Year | 1,213 | 849
Fair Value, Over 1 Year | 466 | 3,974
Fair Value | 1,679 | 4,823
Securities available-for-sale, Unrealized Losses |  |
Gross unrealized losses, Less Than 1 Year | 4 | 19
Gross unrealized losses, Over 1 Year | 10 | 25
Unrealized Losses | $ 14 | $ 44

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