Income Taxes (Reconciliation Of Unrecognized Tax Benefits) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Balance as of January 1	$ 46,087	$ 49,943
Additions based on tax positions related to the current year	3,142	306
Additions for tax positions of prior years	17,006	7,907
Reductions for tax positions of prior years	(3,571)	(926)
Reductions resulting from the lapse of the statute of limitations	(1,764)	(1,391)
Settlements with taxing authorities	(7,065)	(9,752)
Balance as of December 31	$ 53,835	$ 46,087