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INVESTMENTS IN QUALIFIED AFFORDABLE HOUSING PARTNERSHIPS, TAX CREDIT AND OTHER INVESTMENTS, NET (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Jan. 01, 2014
INVESTMENTS IN QUALIFIED AFFORDABLE HOUSING PARTNERSHIPS, TAX CREDIT AND OTHER INVESTMENTS, NET |  |  |  |  |
Minimum compliance period to fully utilize the tax credits |  | 15 years |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Retained earnings | [1] | $ 1,872,594 | $ 1,604,141 |  |
Investments in tax credit and other investments |  | 187,200 | 110,100 |  |
Other Tax Credit Investments, Commitment |  | 113,200 | 71,400 |  |
Noninterest expense — amortization of tax credit and other investments | [1] | $ 36,120 | $ 44,092 | $ 5,973 |
ASU 2014-01 |  |  |  |  |
New Accounting Pronouncements or Change in Accounting Principle [Line Items] |  |  |  |  |
Retained earnings |  |  |  |  | $ 2,100
[1] | Prior period was restated to reflect the retrospective application of adopting the new accounting guidance related to the Company’s investments in qualified affordable housing projects Accounting Standards Update (“ASU”) 2014-01. Please see Note 9 — Investments in Qualified Affordable Housing Partnerships, Tax Credit and Other Investments, Net to the Consolidated Financial Statements for additional information.

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