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Derivative Instruments and Hedging Activities (Tables) | 3 Months Ended
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Mar. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Value of Derivative Assets and Derivative Liabilities | The following tables indicate the amounts representing the value of derivative assets and derivative liabilities as of the dates presented:
| Derivatives (included in Other Assets) |  | Derivatives (included in Other Liabilities)
(dollars in thousands) | March 31, 2018 |  | December 31, 2017 |  | March 31, 2018 |  | December 31, 2017
Derivatives not Designated as Hedging Instruments: |  |  |  |  |  |  |
Interest Rate Swap Contracts- Commercial Loans |  |  |  |  |  |  |
Fair value | $ | 4,669 |  |  | $ | 3,074 |  |  | $ | 4,765 |  |  | $ | 3,055 |
Notional amount | 253,580 |  |  | 263,841 |  |  | 253,580 |  |  | 263,841 |
Net collateral received/posted | 2,011 |  |  | — |  |  | — |  |  | 1,448 |
Interest Rate Lock Commitments- Mortgage Loans |  |  |  |  |  |  |
Fair value | 271 |  |  | 226 |  |  | — |  |  | — |
Notional amount | 9,710 |  |  | 6,860 |  |  | — |  |  | — |
Forward Sale Contracts- Mortgage Loans |  |  |  |  |  |  |
Fair value | — |  |  | — |  |  | 24 |  |  | 5 |
Notional amount | $ | — |  |  | $ | — |  |  | $ | 9,165 |  |  | $ | 6,580 |
Schedule of Offsetting Derivative Assets | The following tables indicate the gross amounts of commercial loan swap derivative assets and derivative liabilities, the amounts offset and the carrying values in the Consolidated Balance Sheets as of the dates presented:
| Derivatives (included in Other Assets) |  | Derivatives (included in Other Liabilities)
(dollars in thousands) | March 31, 2018 |  | December 31, 2017 |  | March 31, 2018 |  | December 31, 2017
Derivatives not Designated as Hedging Instruments: |  |  |  |  |  |  |
Gross amounts recognized | $ | 5,818 |  |  | $ | 4,974 |  |  | $ | 5,914 |  |  | $ | 4,955 |
Gross amounts offset | (1,149 | ) |  | (1,900 | ) |  | (1,149 | ) |  | (1,900 | )
Net Amounts Presented in the Consolidated Balance Sheets | 4,669 |  |  | 3,074 |  |  | 4,765 |  |  | 3,055 |
Gross amounts not offset(1) | (2,011 | ) |  | — |  |  | — |  |  | (1,448 | )
Net Amount | $ | 2,658 |  |  | $ | 3,074 |  |  | $ | 4,765 |  |  | $ | 1,607 |
(1) Amounts represent received/posted collateral.
Schedule of Offsetting Liabilities | The following tables indicate the gross amounts of commercial loan swap derivative assets and derivative liabilities, the amounts offset and the carrying values in the Consolidated Balance Sheets as of the dates presented:
| Derivatives (included in Other Assets) |  | Derivatives (included in Other Liabilities)
(dollars in thousands) | March 31, 2018 |  | December 31, 2017 |  | March 31, 2018 |  | December 31, 2017
Derivatives not Designated as Hedging Instruments: |  |  |  |  |  |  |
Gross amounts recognized | $ | 5,818 |  |  | $ | 4,974 |  |  | $ | 5,914 |  |  | $ | 4,955 |
Gross amounts offset | (1,149 | ) |  | (1,900 | ) |  | (1,149 | ) |  | (1,900 | )
Net Amounts Presented in the Consolidated Balance Sheets | 4,669 |  |  | 3,074 |  |  | 4,765 |  |  | 3,055 |
Gross amounts not offset(1) | (2,011 | ) |  | — |  |  | — |  |  | (1,448 | )
Net Amount | $ | 2,658 |  |  | $ | 3,074 |  |  | $ | 4,765 |  |  | $ | 1,607 |
(1) Amounts represent received/posted collateral.
Amount of Gain or Loss Recognized in Income on Derivatives | The following tables indicate the gain or loss recognized in income on derivatives for the periods presented:
| Three Months Ended March 31,
(dollars in thousands) | 2018 |  | 2017
Derivatives not Designated as Hedging Instruments |  |  |
Interest rate swap contracts—commercial loans | $ | 115 |  |  | $ | 24 |
Interest rate lock commitments—mortgage loans | 45 |  |  | 233 |
Forward sale contracts—mortgage loans | (19 | ) |  | (36 | )
Total Derivatives (Loss)/Gain | $ | 141 |  |  | $ | 221 |

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