Other Noncurrent Assets (Schedule Of Other Noncurrent Assets) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Other Noncurrent Assets [Abstract]
Investment in long-term product supply arrangements	$ 13,075	$ 10,324
Customer acquisition costs, net	21,199	21,795
Other assets	22,957	18,942
Other noncurrent assets, net	$ 57,231	$ 51,061