(Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Goodwill and Intangible Assets (Additional Textual) [Abstract]
Impairment of goodwill			$ 0
Amortization of Intangible Assets	$ 2,000,000	$ 1,400,000	$ 6,100,000	$ 3,300,000
Customer Relationships [Member] | Minimum [Member]
Goodwill and Intangible Assets (Textual) [Abstract]
Period of amortization of intangible assets			5 years
Customer Relationships [Member] | Maximum [Member]
Goodwill and Intangible Assets (Textual) [Abstract]
Period of amortization of intangible assets			12 years