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Investment securities (Tables) | 6 Months Ended
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Jun. 30, 2019
Schedule of amortized cost and fair value of investment securities aggregated by investment category |
|  |  |  |  | Gross |  | Gross |  |  |  |
|  | Amortized |  | Unrealized |  | Unrealized |  | Fair |
June 30, 2019 |  | Cost |  | Gains |  | Losses |  | Value |
Available-for-sale: |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities |  | $ | 23,958 |  | $ | 143 |  | $ | 17 |  | $ | 24,084 |
U.S. Government-sponsored enterprises |  |  | 93,830 |  |  | 82 |  |  | 423 |  |  | 93,489 |
State and municipals: |  |  |  |  |  |  |  |  |  |  |  |  |
Taxable |  |  | 12,475 |  |  | 367 |  |  |  |  |  | 12,842 |
Tax-exempt |  |  | 69,454 |  |  | 713 |  |  | 32 |  |  | 70,135 |
Residential Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government agencies |  |  | 10,669 |  |  | 135 |  |  | 20 |  |  | 10,784 |
U.S. Government-sponsored enterprises |  |  | 40,901 |  |  | 776 |  |  | 92 |  |  | 41,585 |
Commercial Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government-sponsored enterprises |  |  | 8,601 |  |  | 145 |  |  |  |  |  | 8,746 |
Total |  | $ | 259,888 |  | $ | 2,361 |  | $ | 584 |  | $ | 261,665 |
Held-to-maturity: |  |  |  |  |  |  |  |  |  |  |  |  |
Tax-exempt state and municipals |  | $ | 6,854 |  | $ | 151 |  |  |  |  | $ | 7,005 |
Residential Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government agencies |  |  | 36 |  |  |  |  |  |  |  |  | 36 |
U.S. Government-sponsored enterprises |  |  | 1,079 |  |  | 32 |  | $ | 1 |  |  | 1,110 |
Total |  | $ | 7,969 |  | $ | 183 |  | $ | 1 |  | $ | 8,151 |
|  |  |  |  | Gross |  | Gross |  |  |  |
|  | Amortized |  | Unrealized |  | Unrealized |  | Fair |
December 31, 2018 |  | Cost |  | Gains |  | Losses |  | Value |
Available-for-sale: |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities |  | $ | 25,948 |  |  | 9 |  | $ | 365 |  | $ | 25,592 |
U.S. Government-sponsored enterprises |  |  | 94,999 |  | $ | 2 |  |  | 2,183 |  |  | 92,818 |
State and municipals: |  |  |  |  |  |  |  |  |  |  |  |  |
Taxable |  |  | 13,544 |  |  | 309 |  |  |  |  |  | 13,853 |
Tax-exempt |  |  | 86,361 |  |  | 338 |  |  | 745 |  |  | 85,954 |
Residential Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government agencies |  |  | 12,663 |  |  | 50 |  |  | 84 |  |  | 12,629 |
U.S. Government-sponsored enterprises |  |  | 33,149 |  |  | 49 |  |  | 401 |  |  | 32,797 |
Commercial Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government-sponsored enterprises |  |  | 6,269 |  |  |  |  |  | 230 |  |  | 6,039 |
Total |  | $ | 272,933 |  | $ | 757 |  | $ | 4,008 |  | $ | 269,682 |
Held-to-maturity: |  |  |  |  |  |  |  |  |  |  |  |  |
Tax-exempt state and municipals |  | $ | 6,855 |  | $ | 12 |  | $ | 43 |  | $ | 6,824 |
Residential Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government agencies |  |  | 42 |  |  |  |  |  |  |  |  | 42 |
U.S. Government-sponsored enterprises |  |  | 1,464 |  |  | 55 |  |  | 5 |  |  | 1,514 |
Total |  | $ | 8,361 |  | $ | 67 |  | $ | 48 |  | $ | 8,380 |
Schedule of fair value and unrealized losses of investment securities in continuous unrealized loss position |
|  | Less Than 12 Months |  | 12 Months or More |  | Total |
|  | Fair |  | Unrealized |  | Fair |  | Unrealized |  | Fair |  | Unrealized |
June 30, 2019 |  | Value |  | Losses |  | Value |  | Losses |  | Value |  | Losses |
U.S. Treasury securities |  | $ |  |  | $ |  |  | $ | 7,993 |  | $ | 17 |  | $ | 7,993 |  | $ | 17 |
U.S. Government-sponsored enterprises |  |  |  |  |  |  |  |  | 75,292 |  |  | 423 |  |  | 75,292 |  |  | 423 |
State and municipals: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax-exempt |  |  |  |  |  |  |  |  | 14,499 |  |  | 32 |  |  | 14,499 |  |  | 32 |
Residential Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government agencies |  |  |  |  |  |  |  |  | 5,281 |  |  | 20 |  |  | 5,281 |  |  | 20 |
U.S. Government-sponsored enterprises |  |  |  |  |  |  |  |  | 10,372 |  |  | 93 |  |  | 10,372 |  |  | 93 |
Commercial Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government-sponsored enterprises |  |  |  |  |  |  |  |  |  |  |  |  |  |  | — |  |  | — |
Total |  | $ | — |  | $ | — |  | $ | 113,437 |  | $ | 585 |  | $ | 113,437 |  | $ | 585 |
|  | Less Than 12 Months |  | 12 Months or More |  | Total |
|  | Fair |  | Unrealized |  | Fair |  | Unrealized |  | Fair |  | Unrealized |
December 31, 2018 |  | Value |  | Losses |  | Value |  | Losses |  | Value |  | Losses |
U.S. Treasury securities |  | $ | 1,995 |  | $ | 2 |  | $ | 19,671 |  | $ | 363 |  | $ | 21,666 |  | $ | 365 |
U.S. Government-sponsored enterprises |  |  | 2,037 |  |  | 1 |  |  | 89,729 |  |  | 2,182 |  |  | 91,766 |  |  | 2,183 |
State and municipals: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax-exempt |  |  | 9,022 |  |  | 74 |  |  | 52,352 |  |  | 714 |  |  | 61,374 |  |  | 788 |
Residential Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government agencies |  |  |  |  |  |  |  |  | 7,800 |  |  | 84 |  |  | 7,800 |  |  | 84 |
U.S. Government-sponsored enterprises |  |  | 12,851 |  |  | 55 |  |  | 13,881 |  |  | 351 |  |  | 26,732 |  |  | 406 |
Commercial Mortgage-backed securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government-sponsored enterprises |  |  |  |  |  |  |  |  | 6,039 |  |  | 230 |  |  | 6,039 |  |  | 230 |
Total |  | $ | 25,905 |  | $ | 132 |  | $ | 189,472 |  | $ | 3,924 |  | $ | 215,377 |  | $ | 4,056 |
Summary of unrealized and realized gains and losses | The following is a summary of unrealized and realized gains and losses recognized in net income on equity securities during the three and six months ended June 30, 2019 (in thousands):
For the Three Months Ended June 30, |  |  | 2019 |  |  | 2018
Net gains (losses) recognized during the period on equity securities |  | $ | (9) |  | $ | 8
Less: Net gains and (losses) recognized during the period on equity securities sold during the period |  |  |  |  |  |
Unrealized gains (losses) recognized during the reporting period on equity securities still held at the reporting date |  | $ | (9) |  | $ | 8
For the Six Months Ended June 30, |  |  | 2019 |  |  | 2018
Net gains (losses) recognized during the period on equity securities |  | $ | (8) |  | $ |
Less: Net gains and (losses) recognized during the period on equity securities sold during the period |  |  |  |  |  |
Unrealized gains (losses) recognized during the reporting period on equity securities still held at the reporting date |  | $ | (8) |  | $ |
Available-for-Sale Securities. |
Schedule of maturity distribution of fair value |
|  | Fair |
June 30, 2019 |  | Value |
Within one year |  | $ | 38,102 |
After one but within five years |  |  | 133,582 |
After five but within ten years |  |  | 10,729 |
After ten years |  |  | 18,137 |
|  |  | 200,550 |
Mortgage-backed securities |  |  | 61,115 |
Total |  | $ | 261,665 |
Held-to-maturity Securities. |
Schedule of maturity distribution of fair value |
|  | Amortized |  | Fair |
June 30, 2019 |  | Cost |  | Value |
Within one year |  |  |  |  |  |  |
After one but within five years |  |  |  |  |  |  |
After five but within ten years |  |  |  |  |  |  |
After ten years |  | $ | 6,854 |  | $ | 7,005 |
|  |  | 6,854 |  |  | 7,005 |
Mortgage-backed securities |  |  | 1,115 |  |  | 1,146 |
Total |  | $ | 7,969 |  | $ | 8,151 |

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