Summary of Significant Accounting Policies (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Summary of Significant Accounting Policies [Abstract]
Clinical Services Reimbursement	$ 1.1	$ 0.4	$ 1.8	$ 0.8