Restructuring Activities (Schedule Of Effects Of The Restructuring Initiatives) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended		12 Months Ended		12 Months Ended
	Dec. 31, 2011 Consolidation Of Executive Offices [Member]	Dec. 31, 2010 Consolidation Of Executive Offices [Member]	Dec. 31, 2011 Consolidation Of Executive Offices [Member] Employee-Separation Costs [Member]	Dec. 31, 2010 Consolidation Of Executive Offices [Member] Employee-Separation Costs [Member]	Dec. 31, 2011 Consolidation Of Executive Offices [Member] Relocation And Other Costs [Member]	Dec. 31, 2010 Outsourcing Initiative [Member]	Dec. 31, 2010 Outsourcing Initiative [Member] Employee-Separation Costs [Member]
Restructuring Cost and Reserve [Line Items]
Charges	$ 1,981		$ 1,122		$ 859	$ 2,496	$ 2,496
Cash payments	(4,352)		(3,493)		(859)
Balance	125	2,496	125	2,496
Total expense recognized to date	$ 4,477		$ 3,618		$ 859