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Investment Securities (Tables) | 12 Months Ended
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Dec. 31, 2019
Investment Securities |
Schedule of summary of investment securities |
|  | At December 31, 2019
|  |  |  |  | Gross |  | Gross |  |  |
|  | Amortized |  | Unrealized |  | Unrealized |  | Fair
(dollars in thousands) |  | Cost |  | Gains |  | Losses |  | Value
Collaterized mortgage obligations |  | $ | 27,618 |  | $ | 52 |  | $ | (187) |  | $ | 27,483
Agency mortgage-backed securities |  |  | 27,823 |  |  | 149 |  |  | (135) |  |  | 27,837
Municipal securities |  |  | 12,301 |  |  | 191 |  |  | (17) |  |  | 12,475
U.S. Government agency securities |  |  | 3,195 |  |  | 1 |  |  | (5) |  |  | 3,191
U.S. Treasury securities |  |  | 500 |  |  | — |  |  | — |  |  | 500
Total securities available for sale |  | $ | 71,437 |  | $ | 393 |  | $ | (344) |  | $ | 71,486
|  | At December 31, 2018
|  |  |  |  | Gross |  | Gross |  |  |
|  | Amortized |  | Unrealized |  | Unrealized |  | Fair
(dollars in thousands) |  | Cost |  | Gains |  | Losses |  | Value
Collaterized mortgage obligations |  | $ | 20,463 |  | $ | 6 |  | $ | (663) |  | $ | 19,806
Agency mortgage-backed securities |  |  | 25,895 |  |  | 6 |  |  | (914) |  |  | 24,987
Municipal securities |  |  | 34,205 |  |  | 78 |  |  | (453) |  |  | 33,830
U.S. Government agency securities |  |  | 1,999 |  |  | — |  |  | (40) |  |  | 1,959
U.S. Treasury securities |  |  | 1,001 |  |  | — |  |  | (11) |  |  | 990
Total securities available for sale |  | $ | 83,563 |  | $ | 90 |  | $ | (2,081) |  | $ | 81,572
Schedule of gross unrealized losses and fair value, aggregated by investment category and length of time in continuous unrealized loss position | The following tables show the fair value and gross unrealized losses associated with the investment portfolio, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position as of December 31, 2019 and 2018:
|  | At December 31, 2019
|  | Less than 12 months |  | 12 months or more |  | Total
|  | Fair |  | Unrealized |  | Fair |  | Unrealized |  | Fair |  | Unrealized
(dollars in thousands) |  | Value |  | Loss |  | Value |  | Loss |  | Value |  | Loss
Collaterized mortgage obligations |  | $ | 11,792 |  | $ | (65) |  | $ | 7,330 |  | $ | (122) |  | $ | 19,122 |  | $ | (187)
Agency mortgage-backed securities |  |  | 4,577 |  |  | (20) |  |  | 10,918 |  |  | (115) |  |  | 15,495 |  |  | (135)
Municipal securities |  |  | 1,806 |  |  | (7) |  |  | 864 |  |  | (10) |  |  | 2,670 |  |  | (17)
U.S. Government agency securities |  |  | 591 |  |  | (5) |  |  | — |  |  | — |  |  | 591 |  |  | (5)
U.S. Treasury securities |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | —
|  | $ | 18,766 |  | $ | (97) |  | $ | 19,112 |  | $ | (247) |  | $ | 37,878 |  | $ | (344)
|  | At December 31, 2018
|  | Less than 12 months |  | 12 months or more |  | Total
|  | Fair |  | Unrealized |  | Fair |  | Unrealized |  | Fair |  | Unrealized
(dollars in thousands) |  | Value |  | Loss |  | Value |  | Loss |  | Value |  | Loss
Collaterized mortgage obligations |  | $ | 1,625 |  | $ | (22) |  | $ | 17,546 |  | $ | (640) |  | $ | 19,171 |  | $ | (662)
Agency mortgage-backed securities |  |  | 3,399 |  |  | (74) |  |  | 21,417 |  |  | (840) |  |  | 24,816 |  |  | (914)
Municipal securities |  |  | 13,162 |  |  | (244) |  |  | 8,415 |  |  | (210) |  |  | 21,577 |  |  | (454)
U.S. Government agency securities |  |  | — |  |  | — |  |  | 1,959 |  |  | (40) |  |  | 1,959 |  |  | (40)
U.S. Treasury securities |  |  | — |  |  | — |  |  | 990 |  |  | (11) |  |  | 990 |  |  | (11)
|  | $ | 18,186 |  | $ | (340) |  | $ | 50,327 |  | $ | (1,741) |  | $ | 68,513 |  | $ | (2,081)
Schedule of contractual maturities of investment securities |
|  | At December 31, 2019
|  | Amortized |  | Fair
(dollars in thousands) |  | Cost |  | Value
Due within one year |  | $ | 1,597 |  | $ | 1,591
Due over one to five years |  |  | 1,886 |  |  | 1,887
Due over five to ten years |  |  | 1,917 |  |  | 1,932
Due over ten years |  |  | 10,596 |  |  | 10,756
Collaterized mortgage obligations |  |  | 27,618 |  |  | 27,483
Agency mortgage-backed securities |  |  | 27,823 |  |  | 27,837
Total securities available for sale |  | $ | 71,437 |  | $ | 71,486

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