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TRANSACTIONS WITH RELATED PERSONS (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Loans and Leases Receivable, Related Parties [Roll Forward] |  |  |
Balance at January 1, 2011 | $ 1,496 |  |
New loans | 274 |  |
Repayments | 459 |  |
Balance at December 31, 2011 | 1,311 | 1,496 |
Unfunded Loan Commitments Available To Related Parties | 4,446 | 4,343 |
Revenue from Related Parties | 33,653 | 34,536 | 33,654
Revenue From Largest Individual Institution Related Parties | 22,793 | 23,463 | 22,024
Investment Securities Availabe For Sale Related Parties | 16,069 | 14,777 |
Investment Cost Related Parties | $ 452 | $ 508 |
Common Class B [Member] |  |  |
Loans and Leases Receivable, Related Parties [Roll Forward] |  |  |
Stock Repurchased and Retired During Period, Shares | 606,829 |  |
Common Class B [Member] | Majority Shareholder [Member] |  |  |
Loans and Leases Receivable, Related Parties [Roll Forward] |  |  |
Stock Repurchased and Retired During Period, Shares | 593,954 |  |

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