Restructuring Activities (Schedule Of Effects Of The Restructuring Initiatives) (Details) (USD $) In Thousands	3 Months Ended	9 Months Ended
	Dec. 31, 2011	Sep. 30, 2011 Consolidation Of Executive Offices [Member]	Sep. 30, 2011 Consolidation Of Executive Offices [Member] Employee-Separation Costs [Member]	Sep. 30, 2011 Consolidation Of Executive Offices [Member] Relocation And Other Costs [Member]
Restructuring Cost and Reserve [Line Items]
Beginning balance	$ 100	$ 2,496	$ 2,496
2011 charges		1,828	1,054	774
Cash payments		(4,267)	(3,493)	(774)
Ending balance		57	57
Total expense recognized to date		4,324	3,550	774
Expected remaining expenses	$ 300	$ 276		$ 276