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COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Thousands | Mar. 31, 2016 | Dec. 31, 2015 | Mar. 31, 2015 | Dec. 31, 2014
--- | --- | --- | --- | ---
Credit Extensions |  |  |  |
Allowance for loan losses | $ 260,238 | $ 264,959 |  |
Unfunded Lending Commitments |  |  |  |
Credit Extensions |  |  |  |
Allowance for loan losses | 21,414 | 20,360 | $ 15,632 | $ 12,712
Unfunded Lending Commitments | Accrued Expenses and Other Liabilities |  |  |  |
Credit Extensions |  |  |  |
Allowance for loan losses | 20,800 | 19,800 |  |
Undisbursed Loan Commitments |  |  |  |
Credit Extensions |  |  |  |
Loan commitments | 3,859,835 | 3,370,271 |  |
Commercial and Standby Letters of Credit |  |  |  |
Credit Extensions |  |  |  |
Commercial and standby letters of credit (“SBLCs”) | 1,254,590 | $ 1,293,547 |  |
Commercial Letters Of Credit |  |  |  |
Credit Extensions |  |  |  |
Commercial and standby letters of credit (“SBLCs”) | 45,800 |  |  |
Standby Letters of Credit |  |  |  |
Credit Extensions |  |  |  |
Commercial and standby letters of credit (“SBLCs”) | $ 1,210,000 |  |  |

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