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Derivatives (Tables) | 12 Months Ended
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Dec. 31, 2017
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Credit Value Adjustment Recorded Related to Notional Amount of Derivatives Outstanding | The following table depicts the credit value adjustment recorded related to the notional amount of derivatives outstanding as well as the notional amount of risk participation agreements participated to other banks at December 31:
| 2017 |  | 2016
| (dollars in thousands)
Derivatives not Designated as Hedging Instruments |  |  |
Credit value adjustment | $ | (791 | ) |  | $ | (317 | )
Notional Amount: |  |  |
Interest rate derivatives | 401,304 |  |  | 345,102 |
Interest rate caps | 46,444 |  |  | 14,762 |
Risk participation agreements | 197,660 |  |  | 174,213 |
Sold credit protection on risk participation agreements | (46,170 | ) |  | (40,281 | )
Derivatives Designated as Hedging Instruments |  |  |
Interest rate swaps: |  |  |
Fair value adjustment | 459 |  |  | (443 | )
Notional Amount | 150,000 |  |  | 200,000 |
Interest rate forwards: |  |  |
Fair value adjustment | 19 |  |  | — |
Notional Amount | 17,000 |  |  | — |
Foreign exchange forwards: |  |  |
Fair value adjustment | (70 | ) |  | (8 | )
Notional Amount | 10,077 |  |  | 4,749 |
Schedule of Change in Fair Value of Derivative Assets and Liabilities | The table below presents the amount representing the change in the fair value of derivative assets and derivative liabilities attributable to credit risk included in “Other income” on the Consolidated Statements of Income for the years ended December 31:
| 2017 |  | 2016 |  | 2015
| (dollars in thousands)
Non-hedging interest rate derivatives: |  |  |  |  |
(Decrease) increase in other income | $ | (473 | ) |  | $ | 219 |  |  | $ | (274 | )
Hedging interest rate derivatives: |  |  |  |  |
Increase in interest income | 452 |  |  | 1,627 |  |  | 2,049 |
Increase in other income | 119 |  |  | 70 |  |  | 64 |
Hedging interest rate forwards: |  |  |  |  |
Decrease in other expense | (19 | ) |  | — |  |  | — |
Hedging interest rate derivatives: |  |  |  |  |
Increase (decrease) in other expense | 4 |  |  | (5 | ) |  | — |

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- Definition Notional amounts and credit value adjustment recorded related to the notional amount of derivatives outstanding. + References No definition available. + Details
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- Definition Tabular disclosure of interest rate derivatives, including, but not limited to, the fair value of the derivatives, statement of financial position location, and statement of financial performance location of these instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 + Details
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