Income Taxes (Reconciliation of the Beginning and Ending Amount of Unrecognized Tax Benefits) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Reconciliation of the Beginning and Ending Amount of Unrecognized Tax Benefits [Roll Forward]
Beginning balance	$ 43,904	$ 79,199
Additions based on tax positions related to the current year	13,694	2,459
Additions for tax positions of prior years	10,611	9,558
Reductions related to the expiration of statutes of limitations	(2,116)	(33,594)
Settlements	(2,301)	(13,718)
Ending balance	$ 63,792	$ 43,904