Business Combinations (Narrative) (Details) (USD $)	0 Months Ended	3 Months Ended		6 Months Ended				6 Months Ended	0 Months Ended		0 Months Ended	1 Months Ended	0 Months Ended
	May 21, 2014 General_Physicians_and_Surgeons ProductService_Groups	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2014 Curepet, Inc. and Healthcare Magic [Member] Companies	Jan. 27, 2014 Curepet, Inc. [Member]	Jun. 30, 2014 Curepet, Inc. [Member]	Jun. 02, 2012 Planetsoft [Member]	Jun. 30, 2012 Planetsoft [Member]	May 21, 2014 Healthcare Magic [Member]	Jun. 30, 2014 Fair Value, Inputs, Level 2 [Member] Fair Value, Measurements, Recurring [Member] Planetsoft [Member]	Jun. 02, 2012 Fair Value, Inputs, Level 2 [Member] Fair Value, Measurements, Recurring [Member] Planetsoft [Member]	Jun. 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				Jun. 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		0	(5,815,000)	(1,762,000)	(6,114,000)
Derivative Liability		17,209,000		17,209,000		14,420,000	17,495,000		5,000,000	1,600,000			4,800,000			17,209,000	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		17,072,000		17,072,000		10,283,000										17,100,000	10,300,000
Business acquisition, contingent consideration, at fair value, current		137,000		137,000		4,137,000										100,000	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														530,000	1,400,000
Goodwill		$ 352,833,000		$ 352,833,000		$ 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