Other Noncurrent Assets (Schedule Of Other Noncurrent Assets) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Other Noncurrent Assets [Abstract]
Investment in long-term product supply arrangements	$ 11,078	$ 13,075
Customer acquisition costs, net	23,742	21,199
Other assets	25,743	22,957
Other long-term assets, net	$ 60,563	$ 57,231