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Commitments and Contingencies (Tables) | 6 Months Ended
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Jun. 30, 2016
Commitments and Contingencies Disclosure [Abstract] |
Schedule of Fair Value, Off-balance Sheet Risks [Table Text Block] | The following table summarizes the above financial instruments at the dates indicated:
| June 30, 2016 |  | December 31, 2015
| (Dollars in thousands)
Commitments to extend credit | $ | 2,254,228 |  |  | $ | 2,091,170 |
Standby letters of credit | 19,301 |  |  | 17,962 |
Deferred standby letter of credit fees | 123 |  |  | 72 |

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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=73719730&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=73719730&loc=d3e13433-108611 + Details
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