Goodwill (Schedule Of Goodwill) (Details) (USD $)	12 Months Ended
	Dec. 31, 2012 segment	Dec. 31, 2011
Goodwill [Abstract]
Balance	$ 130,747,000	$ 70,278,000
Purchase price adjustments	(1,623,000)
Acquisitions/purchase accounting adjustments	17,987,000	60,728,000
Acquisitions	17,987,000	60,728,000
Foreign currency translation impact	147,000	(259,000)
Balance	147,258,000	130,747,000
Number of operating segments (alloocated to goodwill impairment testing)	1
Goodwill impairment	$ 0	$ 0