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v3.10.0.1

Investment Securities (Details) | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2018 USD ($) | Jun. 30, 2017 USD ($) | Jun. 30, 2018 USD ($) securities | Jun. 30, 2017 USD ($) | Dec. 31, 2017 USD ($)
Available-for-sale: [Abstract] |  |  |  |  |
Amortized Cost | $ 629,143,000 |  | $ 629,143,000 |  | $ 581,543,000
Gross Unrealized Gains | 1,590,000 |  | 1,590,000 |  | 2,900,000
Gross Unrealized (Losses) | (14,430,000) |  | (14,430,000) |  | (5,864,000)
Fair Value | 616,303,000 |  | 616,303,000 |  | 578,579,000
Gain (Loss) on Sale of Securities, Net | 881,000 | $ 335,000 | 901,000 | $ 335,000 |
Held-to-maturity: [Abstract] |  |  |  |  |
Held-to-maturity Securities | 69,383,000 |  | 69,383,000 |  | 69,332,000
Held-to-maturity Securities, Fair Value | 67,525,000 |  | 67,525,000 |  | 68,457,000
Realized Investment Gains (Losses) [Abstract] |  |  |  |  |
Gross gains | 921,000 | 352,000 | 941,000 | 352,000 |
Gross losses | (40,000) | $ (17,000) | (40,000) | $ (17,000) |
U.S. Treasury securities and obligations of U.S. government corporations & agencies |  |  |  |  |
Available-for-sale: [Abstract] |  |  |  |  |
Amortized Cost | 127,342,000 |  | 127,342,000 |  | 115,796,000
Gross Unrealized Gains | 0 |  | 0 |  | 8,000
Gross Unrealized (Losses) | (4,304,000) |  | (4,304,000) |  | (2,034,000)
Fair Value | 123,038,000 |  | 123,038,000 |  | 113,770,000
Held-to-maturity: [Abstract] |  |  |  |  |
Held-to-maturity Securities | 69,383,000 |  | 69,383,000 |  | 69,332,000
Held-to-maturity Securities, Accumulated Unrecognized Holding Gain | 0 |  | 0 |  | 103,000
Held-to-maturity Securities, Accumulated Unrecognized Holding Loss | (1,858,000) |  | (1,858,000) |  | (978,000)
Held-to-maturity Securities, Fair Value | 67,525,000 |  | 67,525,000 |  | 68,457,000
Obligations of states and political subdivisions |  |  |  |  |
Available-for-sale: [Abstract] |  |  |  |  |
Amortized Cost | 176,376,000 |  | 176,376,000 |  | 165,037,000
Gross Unrealized Gains | 1,064,000 |  | 1,064,000 |  | 2,254,000
Gross Unrealized (Losses) | (2,200,000) |  | (2,200,000) |  | (1,025,000)
Fair Value | 175,240,000 |  | 175,240,000 |  | 166,266,000
Mortgage-backed securities: GSE residential |  |  |  |  |
Available-for-sale: [Abstract] |  |  |  |  |
Amortized Cost | 323,238,000 |  | 323,238,000 |  | 295,778,000
Gross Unrealized Gains | 359,000 |  | 359,000 |  | 493,000
Gross Unrealized (Losses) | (7,926,000) |  | (7,926,000) |  | (2,460,000)
Fair Value | 315,671,000 |  | 315,671,000 |  | 293,811,000
Trust preferred securities |  |  |  |  |
Available-for-sale: [Abstract] |  |  |  |  |
Amortized Cost | 0 |  | 0 |  | 2,893,000
Gross Unrealized Gains | 0 |  | 0 |  | 0
Gross Unrealized (Losses) | 0 |  | 0 |  | (345,000)
Fair Value | 0 |  | $ 0 |  | 2,548,000
Number of trust preferred securities | securities |  |  | 1 |  |
Gain (Loss) on Sale of Securities, Net | 846,000 |  |  |  |
Other securities |  |  |  |  |
Available-for-sale: [Abstract] |  |  |  |  |
Amortized Cost | 2,187,000 |  | $ 2,187,000 |  | 2,039,000
Gross Unrealized Gains | 167,000 |  | 167,000 |  | 145,000
Gross Unrealized (Losses) | 0 |  | 0 |  | 0
Fair Value | $ 2,354,000 |  | $ 2,354,000 |  | $ 2,184,000

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