Acquisition (Schedule of Assets Acquired and Liabilities Assumed) (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012	Jul. 12, 2013 Platinum Health Services, LLC [Member]
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Fair value of assets acquired, net of liabilities assumed			$ 2,604
Goodwill	40,183	16,955	23,228
Intangible assets			21,000
Net assets acquired			$ 46,832