Income Taxes (Reconciliation Of Income Taxes) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Components of Income Tax Expense (Benefit), Continuing Operations [Abstract]
Federal statutory rate	35.00%
Computed tax expense	$ 46,234	$ 47,359	$ 85,785
Tax-exempt interest income	(26,381)	(27,789)	(31,414)
Dividends received deduction	(2,239)	(1,482)	(1,704)
State tax expense (benefit)	4,944	1,918	1,299
Other, net	(2,605)	(1,607)	(31)
Total	$ 19,953	$ 18,399	$ 53,935