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INCOME TAXES (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2015 | Sep. 30, 2015 | Jun. 30, 2015 | Mar. 31, 2015 | Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Income Tax Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Tax credits generated from investments in affordable housing partnerships and other investments |  |  |  |  |  |  |  |  | $ 67,600 |  | $ 85,700 |  | $ 35,000 |
Net deferred tax assets | $ 135,871 |  |  |  | $ 389,601 |  |  |  | 135,871 |  | 389,601 |  |  |
Current income tax (benefit) expense: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Federal |  |  |  |  |  |  |  |  | (62,829) |  | 174,640 |  | 152,061 |
State |  |  |  |  |  |  |  |  | (4,750) |  | 70,527 |  | 44,389 |
Foreign |  |  |  |  |  |  |  |  | 409 |  | 3,846 |  | 208 |
Total current income tax (benefit) expense |  |  |  |  |  |  |  |  | (67,170) |  | 249,013 |  | 196,658 |
Deferred income tax expense (benefit): |  |  |  |  |  |  |  |  |  |  |  |  |  |
Federal |  |  |  |  |  |  |  |  | 199,858 |  | (111,122) |  | (31,293) |
State |  |  |  |  |  |  |  |  | 60,437 |  | (36,040) |  | (13,155) |
Foreign |  |  |  |  |  |  |  |  | 919 |  | (706) |  | 1,612 |
Total deferred income tax expense (benefit) |  |  |  |  |  |  |  |  | 261,214 |  | (147,868) |  | (42,836) |
Income tax expense (1) | $ 56,680 | $ 44,892 | $ 45,673 | $ 46,799 | $ 27,093 | $ (6,601) | $ 38,661 | $ 41,992 | $ 194,044 | [1] | $ 101,145 | [1] | $ 153,822 | [1]
Difference between the effective tax rate implicit in the consolidated financial statements and the statutory federal income tax rate |  |  |  |  |  |  |  |  |  |  |  |  |  |
Federal income tax provision at statutory rate (as a percent) |  |  |  |  |  |  |  |  | 35.00% |  | 35.00% |  | 35.00% |
State franchise taxes, net of federal tax effect (as a percent) |  |  |  |  |  |  |  |  | 6.30% |  | 5.00% |  | 4.60% |
Tax credits (as a percent) |  |  |  |  |  |  |  |  | (8.70%) |  | (16.70%) |  | (4.80%) |
Other, net (as a percent) |  |  |  |  |  |  |  |  | 0.90% |  | (0.70%) |  | (0.40%) |
Effective income tax rate (as a percent) |  |  |  |  |  |  |  |  | 33.50% |  | 22.60% |  | 34.40% |
[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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