Income Taxes (Components Of Income Tax Expense Recorded Directly To Stockholders Equity) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Tax Disclosure [Abstract]
Unrealized gain on securities available for sale	$ 19,425	$ 31,565	$ 9,841
Accumulated pension (benefit) loss	(3,608)	(2,641)	327
Compensation expense for tax purposes in excess of amounts recognized for financial reporting purposes	(2,094)	(1,065)	(1,201)
Income tax expense allocated to stockholders’ equity	$ 13,723	$ 27,859	$ 8,967