Income Taxes (Schedule Of Changes In Unrecognized Tax Benefits) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Taxes [Abstract]
Total amounts of unrecognized tax benefits, beginning of period	$ 5,906	$ 5,149	$ 4,976
Gross increases in unrecognized tax benefits as a result of tax positions taken during a prior period	8	290
Unrecognized Tax Benefits, Increases Resulting from Current Period Tax Positions	1,954	1,436	1,241
Decreases in unrecognized tax benefits relating to settlements with taxing authorities	(317)
Decreases in unrecognized tax benefits as a result of a lapse of the applicable statutes of limitations	(1,226)	(969)	(1,068)
Total amounts of unrecognized tax benefits, end of period	$ 6,325	$ 5,906	$ 5,149