Goodwill and Intangible Assets (Textual) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013
Goodwill and Intangible Assets (Textual) [Abstract]
Intangible assets value	$ 96,197		$ 96,197		$ 101,801
Impairment charges	4	4,529	240	9,396	4,867
Amortization expense	1,961	2,151	5,870	8,856
Customer contracts
Goodwill and Intangible Assets (Textual) [Abstract]
Weighted-average estimated useful life of amortization intangible assets (years)			15 years
Other intangible assets
Goodwill and Intangible Assets (Textual) [Abstract]
Weighted-average estimated useful life of amortization intangible assets (years)			6 years
Professional Radiology Services [Member]
Goodwill and Intangible Assets (Textual) [Abstract]
Intangible assets value					$ 1,821