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STOCKHOLDERS' EQUITY (Details 5) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012
Reclassifications out of accumulated other comprehensive income |  |  |  |
Net gain on sales of investment securities | $ 5,345 | $ 71 | $ 10,922 | $ 554
Total before tax | 111,870 | 104,394 | 218,380 | 212,189
Tax expense | (37,855) | (33,837) | (72,274) | (73,549)
NET INCOME | 74,015 | 70,557 | 146,106 | 138,640
Amount Reclassified from Accumulated Other Comprehensive Income |  |  |  |
Reclassifications out of accumulated other comprehensive income |  |  |  |
Total before tax | 5,345 |  | 10,922 |
Tax expense | (2,245) |  | (4,587) |
NET INCOME | 3,100 |  | 6,335 |
Unrealized gain (loss) on investment securities available-for-sale | Amount Reclassified from Accumulated Other Comprehensive Income |  |  |  |
Reclassifications out of accumulated other comprehensive income |  |  |  |
Net gain on sales of investment securities | $ 5,345 |  | $ 10,922 |

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