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Derivative Financial Instruments (Tables) | 3 Months Ended
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Mar. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
Schedule of amounts of non-hedging derivative financial instruments | The following table shows the amounts of non-hedging derivative financial instruments.
|  |  |  | Asset derivatives |  | Liability derivatives
(Dollars in thousands) |  | Notional or contractual amount |  | Statement of Financial Condition classification |  | Fair value |  | Statement of Financial Condition classification |  | Fair value
March 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate swap contracts |  | $ | 781,975 |  |  | Other assets |  | $ | 5,342 |  |  | Other liabilities |  | $ | 5,439 |
Loan commitments |  | 8,114 |  |  | Mortgages held for sale |  | 62 |  |  | N/A |  | — |
Forward contracts - mortgage loan |  | 15,755 |  |  | N/A |  | — |  |  | Mortgages held for sale |  | 7 |
Total |  | $ | 805,844 |  |  |  |  | $ | 5,404 |  |  |  |  | $ | 5,446 |
December 31, 2017 |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate swap contracts |  | $ | 756,550 |  |  | Other assets |  | $ | 5,167 |  |  | Other liabilities |  | $ | 5,262 |
Loan commitments |  | 8,504 |  |  | Mortgages held for sale |  | 66 |  |  | N/A |  | — |
Forward contracts - mortgage loan |  | 19,390 |  |  | N/A |  | — |  |  | Mortgages held for sale |  | 10 |
Total |  | $ | 784,444 |  |  |  |  | $ | 5,233 |  |  |  |  | $ | 5,272 |
Schedule of amounts included in the consolidated statements of income for non-hedging derivative financial instruments | The following table shows the amounts included in the Statements of Income for non-hedging derivative financial instruments.
|  |  |  | Gain (loss)
|  |  |  | Three Months Ended March 31,
(Dollars in thousands) |  | Statement of Income classification |  | 2018 |  | 2017
Interest rate swap contracts |  | Other expense |  | $ | (1 | ) |  | $ | 20 |
Interest rate swap contracts |  | Other income |  | 333 |  |  | 119 |
Loan commitments |  | Mortgage banking |  | (4 | ) |  | 55 |
Forward contracts - mortgage loan |  | Mortgage banking |  | 3 |  |  | (312 | )
Total |  |  |  | $ | 331 |  |  | $ | (118 | )
Schedule of offsetting of financial assets and derivative assets | The following table shows the offsetting of financial assets and derivative assets.
|  |  |  |  |  |  |  | Gross Amounts Not Offset in the Statement of Financial Condition |  |
(Dollars in thousands) |  | Gross Amounts of Recognized Assets |  | Gross Amounts Offset in the Statement of Financial Condition |  | Net Amounts of Assets Presented in the Statement of Financial Condition |  | Financial Instruments |  | Cash Collateral Received |  | Net Amount
March 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate swaps |  | $ | 5,360 |  |  | $ | 18 |  |  | $ | 5,342 |  |  | $ | — |  |  | $ | — |  |  | $ | 5,342 |
December 31, 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate swaps |  | $ | 5,194 |  |  | $ | 27 |  |  | $ | 5,167 |  |  | $ | — |  |  | $ | — |  |  | $ | 5,167 |
Schedule of offsetting of financial liabilities and derivative liabilities | The following table shows the offsetting of financial liabilities and derivative liabilities.
|  |  |  |  |  |  |  | Gross Amounts Not Offset in the Statement of Financial Condition |  |
(Dollars in thousands) |  | Gross Amounts of Recognized Liabilities |  | Gross Amounts Offset in the Statement of Financial Condition |  | Net Amounts of Liabilities Presented in the Statement of Financial Condition |  | Financial Instruments |  | Cash Collateral Pledged |  | Net Amount
March 31, 2018 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate swaps |  | $ | 5,457 |  |  | $ | 18 |  |  | $ | 5,439 |  |  | $ | — |  |  | $ | 365 |  |  | $ | 5,074 |
Repurchase agreements |  | 123,913 |  |  | — |  |  | 123,913 |  |  | 123,913 |  |  | — |  |  | — |
Total |  | $ | 129,370 |  |  | $ | 18 |  |  | $ | 129,352 |  |  | $ | 123,913 |  |  | $ | 365 |  |  | $ | 5,074 |
December 31, 2017 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest rate swaps |  | $ | 5,289 |  |  | $ | 27 |  |  | $ | 5,262 |  |  | $ | — |  |  | $ | 2,705 |  |  | $ | 2,557 |
Repurchase agreements |  | 149,835 |  |  | — |  |  | 149,835 |  |  | 149,835 |  |  | — |  |  | — |
Total |  | $ | 155,124 |  |  | $ | 27 |  |  | $ | 155,097 |  |  | $ | 149,835 |  |  | $ | 2,705 |  |  | $ | 2,557 |

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