Acquisitions and Dispositions (Details) (USD $)	12 Months Ended					12 Months Ended			12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Jun. 23, 2009 Caretools Inc. [Member]	Nov. 12, 2012 Modality, Inc. [Member]	Dec. 31, 2011 MedCafe, Inc. [Member]	Jun. 30, 2011 MedCafe, Inc. [Member]	Feb. 01, 2010 MedCafe, Inc. [Member]	Dec. 31, 2012 EHR [Member]	Dec. 31, 2011 EHR [Member]
Business Acquisition [Line Items]
Contingent consideration				$ 1,300,000				$ 14,800,000
Contingent consideration recorded in connection with business acquisitions							6,400,000			0
Forecasted revenues										0
Loss from discontinued operations, net of tax	(1,666,000)	(8,826,000)	(4,393,000)
Discontinued Operation, Tax Effect of Discontinued Operation	(900,000)		(3,600,000)						900,000	(5,300,000)
Business Acquisition, Percentage of Voting Interests Acquired					100.00%
Business Acquisition, Cost of Acquired Entity, Cash Paid					13,800,000
Gain due to decrease in contingent consideration liabilitiy	$ 0	$ 8,145,000	$ 1,034,000			$ 5,900,000