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COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Thousands | Sep. 30, 2015 | Jun. 30, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Dec. 31, 2013
--- | --- | --- | --- | --- | --- | ---
Credit Extensions |  |  |  |  |  |
Allowance for loan losses | $ 264,430 |  | $ 261,679 |  |  |
Unfunded Lending Commitments |  |  |  |  |  |
Credit Extensions |  |  |  |  |  |
Allowance for loan losses | 19,043 | $ 19,741 | 12,712 | $ 11,558 | $ 12,326 | $ 11,282
Undisbursed Loan Commitments |  |  |  |  |  |
Credit Extensions |  |  |  |  |  |
Loan commitments | 3,130,128 |  | 3,856,625 |  |  |
Commercial and Standby Letters of Credit |  |  |  |  |  |
Credit Extensions |  |  |  |  |  |
Commercial and standby letters of credit ("SBLCs") | $ 1,250,339 |  | $ 1,253,066 |  |  |

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