Goodwill And Intangible Assets (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Indicators of impairment
Amortization expense of intangible assets	$ 4,145	$ 3,713
Customer Relationships [Member]
Weighted-average remaining lives of intangible assets	5 years 4 months 24 days
Trade Name [Member]
Weighted-average remaining lives of intangible assets	6 years 7 months 6 days