Business Combinations (Narrative) (Details) (USD $)	0 Months Ended	3 Months Ended		9 Months Ended				9 Months Ended	0 Months Ended		0 Months Ended	1 Months Ended	0 Months Ended
	May 21, 2014 General_Physicians_and_Surgeons ProductService_Groups	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2014 Curepet, Inc. and Healthcare Magic [Member] Companies	Jan. 27, 2014 Curepet, Inc. [Member]	Sep. 30, 2014 Curepet, Inc. [Member]	Jun. 02, 2012 Planetsoft [Member]	Jun. 30, 2012 Planetsoft [Member]	May 21, 2014 Healthcare Magic [Member]	Jun. 02, 2012 Fair Value, Inputs, Level 2 [Member] Fair Value, Measurements, Recurring [Member] Planetsoft [Member]	Sep. 30, 2014 Contingent Accrued Earn-out Acquisition Consideration [Member]	Dec. 31, 2013 Contingent Accrued Earn-out Acquisition Consideration [Member]	Jan. 27, 2014 Maximum [Member] Curepet, Inc. [Member]	May 21, 2014 Maximum [Member] Healthcare Magic [Member]
Business Acquisition [Line Items]
Document Period End Date				Sep. 30, 2014
Payments to Acquire Businesses, Gross													$ 6,000,000
Number of businesses acquired								2
Purchase Price of Business Acquisition, Cost of Acquired Entity									6,350,000
Reduction of acquisition earnout accruals		(5,771,000)	(4,139,000)	(7,533,000)	(10,253,000)
Derivative Liability		10,850,000		10,850,000		14,420,000	17,495,000		5,000,000	1,600,000			4,700,000		10,850,000	14,420,000	5,000,000	12,400,000
Derivative, Term of Contract									36 months 0 days				24 months 0 days
Business acquisition, contingent consideration, at fair value, noncurrent		10,286,000		10,286,000		10,283,000									10,300,000	10,300,000
Business acquisition, contingent consideration, at fair value, current		564,000		564,000		4,137,000									600,000	4,100,000
Business acquisition, number of common shares issued											296,560
Business acquisition, price per share											$ 16.86
Share subscribed for business acquisition, Value											5,000,000
Put option, exercise period											30 days
Put option, vesting period required prior to exercise											2 years	2 years
Put option liability														1,400,000
Goodwill		$ 350,255,000		$ 350,255,000		$ 337,068,000	$ 326,748,000
General Physicians and Surgeons participating in online network providing medical advisory service	15,000
Medical specialties including alternative medicine	50