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Net income per common share (Tables)
9 Months Ended
Sep. 30, 2012
Schedule Of Earnings Per Share Basic And Diluted Table Text Block
  Quarter ended September 30,Nine months ended September 30,
(In thousands, except per share information)2012201120122011
Net income$ 47,188$ 27,533$ 161,335$ 148,350
Preferred stock dividends  (931)  (931)  (2,792)  (2,792)
Net income applicable to common stock$ 46,257$ 26,602$ 158,543$ 145,558
Average common shares outstanding  102,451,410  102,166,004  102,363,099  102,147,450
Average potential dilutive common shares   33,550  -  182,375  104,270
Average common shares outstanding -         
 assuming dilution  102,484,960  102,166,004  102,545,474  102,251,720
Basic and dilutive EPS$ 0.45$ 0.26$ 1.55$ 1.42