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SECURITIES (Tables) | 3 Months Ended
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Mar. 31, 2019
Investments, Debt and Equity Securities [Abstract] |
Summary of Available-For-Sale Securities | Information related to the fair value and amortized cost of securities available for sale and the related gross unrealized gains and losses recognized in accumulated other comprehensive income is provided in the tables below.
|  |  | Gross |  | Gross |  |
| Amortized |  | Unrealized |  | Unrealized |  | Fair
(dollars in thousands) | Cost |  | Gain |  | Losses |  | Value
March 31, 2019 |  |  |  |  |  |  |
U.S. Treasury securities | $994 |  | $0 |  | $0 |  | $994
U.S. government sponsored agencies | 4,066 |  | 0 |  | (77) |  | 3,989
Mortgage-backed securities: residential | 320,460 |  | 2,378 |  | (2,559) |  | 320,279
Mortgage-backed securities: commercial | 38,244 |  | 1 |  | (216) |  | 38,029
State and municipal securities | 226,924 |  | 5,624 |  | (286) |  | 232,262
Total | $590,688 |  | $8,003 |  | $(3,138) |  | $595,553
December 31, 2018 |  |  |  |  |  |  |
U.S. Treasury securities | $994 |  | $0 |  | $(7) |  | $987
U.S. government sponsored agencies | 4,435 |  | 0 |  | (85) |  | 4,350
Mortgage-backed securities: residential | 329,516 |  | 1,392 |  | (5,496) |  | 325,412
Mortgage-backed securities: commercial | 38,712 |  | 0 |  | (571) |  | 38,141
State and municipal securities | 217,964 |  | 1,403 |  | (2,708) |  | 216,659
Total | $591,621 |  | $2,795 |  | $(8,867) |  | $585,549
Schedule of Available-For-Sale Securities By Maturity | Information regarding the fair value and amortized cost of available for sale debt securities by maturity as of March 31, 2019 is presented below. Maturity information is based on contractual maturity for all securities other than mortgage-backed securities. Actual maturities of securities may differ from contractual maturities because borrowers may have the right to prepay the obligation without a prepayment penalty.
| Amortized |  | Fair
(dollars in thousands) | Cost |  | Value
Due in one year or less | $1,732 |  | $1,742
Due after one year through five years | 25,086 |  | 25,342
Due after five years through ten years | 25,267 |  | 25,970
Due after ten years | 179,899 |  | 184,191
| 231,984 |  | 237,245
Mortgage-backed securities | 358,704 |  | 358,308
Total debt securities . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . | $590,688 |  | $595,553
Schedule of Sales of Securities Available For Sale | Securities proceeds, gross gains and gross losses are presented below.
| Three months ended March 31,
(dollars in thousands) | 2019 |  | 2018
Sales of securities available for sale |  |  |
Proceeds | $13,693 |  | $12,322
Gross gains | 70 |  | 21
Gross losses | (47) |  | (27)
Number of securities | 17 |  | 22
Schedule of Available-For-Sale Securities Continuous Unrealized Loss Position | Information regarding securities with unrealized losses as of March 31, 2019 and December 31, 2018 is presented below. The tables divide the securities between those with unrealized losses for less than twelve months and those with unrealized losses for twelve months or more.
| Less than 12 months |  | 12 months or more |  | Total
| Fair |  | Unrealized |  | Fair |  | Unrealized |  | Fair |  | Unrealized
(dollars in thousands) | Value |  | Losses |  | Value |  | Losses |  | Value |  | Losses
March 31, 2019 |  |  |  |  |  |  |  |  |  |  |
U.S. government sponsored agencies | $1,644 |  | $4 |  | $2,345 |  | $73 |  | $3,989 |  | $77
Mortgage-backed securities: residential | 27,476 |  | 22 |  | 161,955 |  | 2,537 |  | 189,431 |  | 2,559
Mortgage-backed securities: commercial | 5,096 |  | 8 |  | 28,819 |  | 208 |  | 33,915 |  | 216
State and municipal securities | 7,138 |  | 51 |  | 19,685 |  | 235 |  | 26,823 |  | 286
Total temporarily impaired | $41,354 |  | $85 |  | $212,804 |  | $3,053 |  | $254,158 |  | $3,138
December 31, 2018 |  |  |  |  |  |  |  |  |  |  |
U.S. Treasury securities | $0 |  | $0 |  | $987 |  | $7 |  | $987 |  | $7
U.S. government sponsored agencies | 0 |  | 0 |  | 4,350 |  | 85 |  | 4,350 |  | 85
Mortgage-backed securities: residential | 11,619 |  | 12 |  | 217,182 |  | 5,484 |  | 228,801 |  | 5,496
Mortgage-backed securities: commercial | 0 |  | 0 |  | 38,141 |  | 571 |  | 38,141 |  | 571
State and municipal securities | 26,229 |  | 124 |  | 85,982 |  | 2,584 |  | 112,211 |  | 2,708
Total temporarily impaired | $37,848 |  | $136 |  | $346,642 |  | $8,731 |  | $384,490 |  | $8,867
Quantitative Disclosure of Available-For-Sale Securities | The total number of securities with unrealized losses as of March 31, 2019 and December 31, 2018 is presented below.
| Less than |  | 12 months |  |
| 12 months |  | or more |  | Total
March 31, 2019 |  |  |  |  |
U.S. government sponsored agencies | 1 |  | 1 |  | 2
Mortgage-backed securities: residential | 12 |  | 64 |  | 76
Mortgage-backed securities: commercial | 1 |  | 7 |  | 8
State and municipal securities | 10 |  | 22 |  | 32
Total temporarily impaired | 24 |  | 94 |  | 118
December 31, 2018 |  |  |  |  |
U.S. Treasury securities | 0 |  | 1 |  | 1
U.S. government sponsored agencies | 0 |  | 2 |  | 2
Mortgage-backed securities: residential | 5 |  | 84 |  | 89
Mortgage-backed securities: commercial | 0 |  | 9 |  | 9
State and municipal securities | 35 |  | 111 |  | 146
Total temporarily impaired | 40 |  | 207 |  | 247

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