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Financial Instruments With Off-Balance Sheet Risk And Financial Instruments With Concentrations Of Credit Risk (Tables) | 12 Months Ended
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Dec. 31, 2011
Financial Instruments With Off-Balance Sheet Risk And Financial Instruments With Concentrations Of Credit Risk [Abstract] |
Amounts Of Off-Balance Sheet Financial Instruments With Credit Risk |
December 31 (In thousands) |  | 2011 |  |  | 2010 |
Loan commitments |  | $ | 809,140 |  |  | $ | 716,598 |
Standby letters of credit |  |  | 18,772 |  |  |  | 24,462 |

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- Definition Schedule of Off Balance Sheet Financial Instruments With Credit Risk [Table Text Block] + References No definition available. + Details
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