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Investment Securities (Tables) | 9 Months Ended
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Sep. 30, 2019
Investment Securities |
Schedule of amortized cost of investment securities to estimated fair values |
|  | September 30, 2019
|  | Amortized |  | Unrealized |  | Unrealized |  | Fair
(dollars in thousands) |  | Cost |  | Gains |  | Losses |  | Value
U.S. Treasury and agencies |  | $ | 21,607 |  | $ | 29 |  | $ | (34) |  | $ | 21,602
Obligations of state and political agencies |  |  | 47,227 |  |  | 703 |  |  | (74) |  |  | 47,856
Mortgage backed securities |  |  |  |  |  |  |  |  |  |  |  |
Residential agency |  |  | 165,995 |  |  | 3,467 |  |  | (125) |  |  | 169,337
Commercial |  |  | 32,546 |  |  | 139 |  |  | (33) |  |  | 32,652
Asset backed securities |  |  | 152 |  |  | 5 |  |  | — |  |  | 157
Corporate bonds |  |  | 7,069 |  |  | 43 |  |  | — |  |  | 7,112
Total available-for-sale investment securities |  | $ | 274,596 |  | $ | 4,386 |  | $ | (266) |  | $ | 278,716
|  | December 31, 2018
|  | Amortized |  | Unrealized |  | Unrealized |  | Fair
(dollars in thousands) |  | Cost |  | Gains |  | Losses |  | Value
U.S. Treasury and agencies |  | $ | 19,364 |  | $ | — |  | $ | (222) |  | $ | 19,142
Obligations of state and political agencies |  |  | 67,662 |  |  | 171 |  |  | (1,446) |  |  | 66,387
Mortgage backed securities |  |  |  |  |  |  |  |  |  |  |  |
Residential agency |  |  | 129,906 |  |  | 210 |  |  | (3,118) |  |  | 126,998
Commercial |  |  | 29,050 |  |  | 20 |  |  | (303) |  |  | 28,767
Asset backed securities |  |  | 398 |  |  | 5 |  |  | (4) |  |  | 399
Corporate bonds |  |  | 8,602 |  |  | — |  |  | (121) |  |  | 8,481
Total available-for-sale investment securities |  | $ | 254,982 |  | $ | 406 |  | $ | (5,214) |  | $ | 250,174
Schedule of investment securities with gross unrealized losses |
|  | September 30, 2019
|  | Less than 12 Months |  | Over 12 Months |  | Total
|  | Unrealized |  | Fair |  | Unrealized |  | Fair |  | Unrealized |  | Fair
(dollars in thousands) |  | Losses |  | Value |  | Losses |  | Value |  | Losses |  | Value
U.S. Treasury and agencies |  | $ | (3) |  | $ | 1,757 |  | $ | (31) |  | $ | 9,969 |  | $ | (34) |  | $ | 11,726
Obligations of state and political agencies |  |  | (23) |  |  | 5,965 |  |  | (51) |  |  | 5,999 |  |  | (74) |  |  | 11,964
Mortgage backed securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Residential agency |  |  | (44) |  |  | 10,020 |  |  | (81) |  |  | 17,138 |  |  | (125) |  |  | 27,158
Commercial |  |  | (18) |  |  | 9,215 |  |  | (15) |  |  | 3,126 |  |  | (33) |  |  | 12,341
Asset backed securities |  |  | — |  |  | 2 |  |  | — |  |  | — |  |  | — |  |  | 2
Corporate bonds |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | —
Total available-for-sale investment securities |  | $ | (88) |  | $ | 26,959 |  | $ | (178) |  | $ | 36,232 |  | $ | (266) |  | $ | 63,191
|  | December 31, 2018
|  | Less than 12 Months |  | Over 12 Months |  | Total
|  | Unrealized |  | Fair |  | Unrealized |  | Fair |  | Unrealized |  | Fair
(dollars in thousands) |  | Losses |  | Value |  | Losses |  | Value |  | Losses |  | Value
U.S. Treasury and agencies |  | $ | (8) |  | $ | 5,288 |  | $ | (214) |  | $ | 11,598 |  | $ | (222) |  | $ | 16,886
Obligations of state and political agencies |  |  | — |  |  | 389 |  |  | (1,446) |  |  | 55,770 |  |  | (1,446) |  |  | 56,159
Mortgage backed securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Residential agency |  |  | (44) |  |  | 7,352 |  |  | (3,074) |  |  | 112,293 |  |  | (3,118) |  |  | 119,645
Commercial |  |  | (39) |  |  | 7,844 |  |  | (264) |  |  | 9,741 |  |  | (303) |  |  | 17,585
Asset backed securities |  |  | — |  |  | 2 |  |  | (4) |  |  | 155 |  |  | (4) |  |  | 157
Corporate bonds |  |  | — |  |  | — |  |  | (121) |  |  | 8,481 |  |  | (121) |  |  | 8,481
Total available-for-sale investment securities |  | $ | (91) |  | $ | 20,875 |  | $ | (5,123) |  | $ | 198,038 |  | $ | (5,214) |  | $ | 218,913
Schedule of contractual maturity of amortized cost and estimated fair value |
|  | Amortized |  | Fair
(dollars in thousands) |  | Cost |  | Value
Due within one year or less |  | $ | 3,016 |  | $ | 3,026
Due after one year through five years |  |  | 35,948 |  |  | 35,989
Due after five years through ten years |  |  | 78,983 |  |  | 80,405
Due after 10 years |  |  | 156,649 |  |  | 159,296
Total available-for-sale investment securities |  | $ | 274,596 |  | $ | 278,716
Schedule of proceeds from the sale of available for sale securities |
|  | Three months ended |  | Nine months ended
|  | September 30, |  | September 30,
(dollars in thousands) |  | 2019 |  | 2018 |  | 2019 |  | 2018
Proceeds |  | $ | 10,934 |  | $ | 2,021 |  | $ | 32,565 |  | $ | 2,466
Realized gains |  |  | 59 |  |  | — |  |  | 357 |  |  | 105
Realized losses |  |  | 11 |  |  | — |  |  | 22 |  |  | 5
Schedule of federal home loan bank |
|  | September 30, |  | December 31,
(dollars in thousands) |  | 2019 |  | 2018
Federal Reserve |  | $ | 2,675 |  | $ | 2,675
FHLB |  |  | 3,121 |  |  | 6,875

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