| **Commitments and Contingent Liabilities (Tables)**     | 3 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                    |
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| **Commitments and Contingencies Disclosure [Abstract]** |                                                                                                                                                                                                                                                                                                                                                                                                                                              |
| Notional Amount of Outstanding Commitments              | The following table identifies the notional amount of those instruments at: March 31, 2013 December 31, 2012 (dollars in thousands)Financial instruments whose contract amounts represent credit risk:   Commitments to extend credit$1,474,447 $1,506,618Financial standby letters of credit40,829 47,185Performance standby letters of credit49,249 69,240Commercial letters of credit330 685 |

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| - Definition
Tabular disclosure of outstanding commitments and letters of credit.
+ References
No definition available.
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