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QUARTERLY FINANCIAL INFORMATION (unaudited) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2010 | Sep. 30, 2010 | Jun. 30, 2010 | Mar. 31, 2010 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
QUARTERLY FINANCIAL INFORMATION (unaudited) |  |  |  |  |  |  |  |  |  |  |
Interest and dividend income | $ 268,904 | $ 282,741 | $ 274,468 | $ 254,335 | $ 292,195 | $ 231,400 | $ 253,533 | $ 318,703 | $ 1,080,448 | $ 1,095,831 | $ 722,818
Interest expense | 39,830 | 44,959 | 47,132 | 45,501 | 45,633 | 48,595 | 49,910 | 56,979 | 177,422 | 201,117 | 237,129
Net interest income | 229,074 | 237,782 | 227,336 | 208,834 | 246,562 | 182,805 | 203,623 | 261,724 | 903,026 | 894,714 | 485,689
Provision for loan losses | 20,000 | 22,000 | 26,500 | 26,506 | 29,834 | 38,648 | 55,256 | 76,421 | 95,006 | 200,159 | 528,666
Net interest income after provision for loan losses | 209,074 | 215,782 | 200,836 | 182,328 | 216,728 | 144,157 | 148,367 | 185,303 | 808,020 | 694,555 | (42,977)
Noninterest (loss) income | 937 | (13,545) | 12,491 | 11,041 | (17,279) | 29,315 | 35,685 | (8,451) | 10,924 | 39,270 | 390,953
Noninterest expense | 106,672 | 104,552 | 117,597 | 106,789 | 113,743 | 99,945 | 125,318 | 138,910 | 435,610 | 477,916 | 243,254
Income before provision for income taxes | 103,339 | 97,685 | 95,730 | 86,580 | 85,706 | 73,527 | 58,734 | 37,942 | 383,334 | 255,909 | 104,722
Provision for income taxes | 37,133 | 35,253 | 35,205 | 30,509 | 29,357 | 26,576 | 22,386 | 13,026 | 138,100 | 91,345 | 22,714
Net income | 66,206 | 62,432 | 60,525 | 56,071 | 56,349 | 46,951 | 36,348 | 24,916 | 245,234 | 164,564 | 76,642
Preferred stock dividends and amortization of preferred stock discount | 1,714 | 1,714 | 1,714 | 1,715 | 24,109 | 6,732 | 6,147 | 6,138 | 6,857 | 43,126 | 49,115
Net income available to common stockholders | $ 64,492 | $ 60,718 | $ 58,811 | $ 54,356 | $ 32,240 | $ 40,219 | $ 30,201 | $ 18,778 | $ 238,377 | $ 121,438 | $ 27,527
Basic earnings per share | $ 0.44 | $ 0.41 | $ 0.40 | $ 0.37 | $ 0.22 | $ 0.27 | $ 0.21 | $ 0.17 | $ 1.62 | $ 0.88 | $ 0.35
Diluted earnings per share | $ 0.43 | $ 0.41 | $ 0.39 | $ 0.37 | $ 0.22 | $ 0.27 | $ 0.21 | $ 0.13 | $ 1.60 | $ 0.83 | $ 0.33

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