Income Taxes (Components Of Income Tax Expense Recorded Directly To Stockholders Equity) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Unrealized gain (loss) on securities available for sale	$ 36,525	$ (84,582)	$ 19,425
Accumulated pension (benefit) loss	(4,433)	6,981	(3,608)
Compensation expense for tax purposes in excess of amounts recognized for financial reporting purposes	(1,850)	(1,003)	(2,094)
Income tax expense (benefit) allocated to stockholders’ equity	$ 30,242	$ (78,604)	$ 13,723