Net Income Per Common Share (Schedule Of Basic And Diluted Earnings Per Share) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Basic Earnings (Loss) Per Share
Net income (loss) available to common shareholders	$ 37,188	$ 16,030	$ 82,704	$ 62,202
Weighted average common shares outstanding	956,694	786,576	865,565	786,429
Basic earnings (loss) per share	$ 0.04	$ 0.02	$ 0.10	$ 0.08
Diluted Earnings (Loss) Per Share
Net income (loss) available to common shareholders	$ 37,188	$ 16,030	$ 82,704	$ 62,202
Weighted average common shares outstanding	956,694	786,576	865,565	786,429
Potentially dilutive shares from assumed exercise of securities or other contracts to purchase common stock	2,986	123,820	61,764	123,288
Weighted average number of diluted common shares	959,680	910,396	927,329	909,717
Diluted earnings (loss) per share	$ 0.04	$ 0.02	$ 0.09	$ 0.07