(Narrative) (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Goodwill and Intangible Assets (Additional Textual) [Abstract]
Impairment of goodwill			$ 0
Amortization of Intangible Assets	$ 2,000,000	$ 1,000,000	$ 4,100,000	$ 1,900,000
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