Commitments And Contingencies (Reconciliation Of Contingent Consideration Liability) (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2014		Sep. 30, 2014		Sep. 30, 2013
Business Combination, Contingent Consideration, Reconciliation of Change in Liability [Roll Forward]
Balance at beginning of period			$ 7,414,000		$ 11,519,000
Acquisitions			3,369,000		0
Payments			(3,732,000)		(4,287,000)
Accretion (a)			782,000	[1]	1,041,000	[1]
Fair value adjustments (a)	422,000	[1]	422,000	[1]	209,000	[1]
Balance at end of the period (b)	8,255,000		8,255,000		8,482,000	[2]
Less current portion in accrued expenses and other current liabilities	(3,705,000)		(3,705,000)		(4,608,000)
Total long-term portion in other long-term liabilities	4,550,000		4,550,000		3,874,000
Contingent consideration, total remaining estimated payments	$ 12,000,000

[1] Recorded in selling, general and administrative expense in the Condensed Consolidated Statements of Income

[2] Amounts represent the fair value of estimated remaining payments. The total estimated remaining payments as of September 30, 2014 are $12.0 million. The liability for contingent consideration expires at various dates through September 2029. Certain of the contingent consideration arrangements are subject to a maximum payment amount, while the remaining arrangements have no maximum contingent consideration.