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Commitments and Financial Instruments with Off-Balance-Sheet Risk (Tables) | 3 Months Ended
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Mar. 31, 2018
Commitments and Contingencies Disclosure [Abstract] |
Schedule of financial instruments whose contract amounts represent credit risk | The following table shows financial instruments whose contract amounts represent credit risk.
(Dollars in thousands) |  | March 31, 2018 |  | December 31, 2017
Amounts of commitments: |  |  |  |
Loan commitments to extend credit |  | $ | 1,031,638 |  |  | $ | 1,030,334 |
Standby letters of credit |  | $ | 31,421 |  |  | $ | 29,961 |
Commercial and similar letters of credit |  | $ | 756 |  |  | $ | 1,837 |

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- Definition Tabular disclosure of the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined) which are not recognized in the financial statements (off-balance sheet) because they fail to meet some other criterion for recognition. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13467-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611 + Details
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