Summary Of Significant Accounting Policies (Reconciliation Of Unrecognized Tax Benefits) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2008
Summary Of Significant Accounting Policies [Line Items]
Balance at January 1, 2009		$ 4,000
Additions based on tax positions related to 2011	0
Balance at December 31, 2011	4,000	4,000
2009 [Member]
Summary Of Significant Accounting Policies [Line Items]
Additions based on tax positions related to prior years	0
2010 [Member]
Summary Of Significant Accounting Policies [Line Items]
Additions based on tax positions related to prior years	$ 0