Description of Business and Summary of Significant Accounting Policies (Goodwill) (Details) - USD ($)	3 Months Ended	12 Months Ended
	Jun. 30, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2016	Nov. 01, 2016	Jul. 01, 2016	Sep. 01, 2015	Jun. 01, 2015	Mar. 03, 2015	Mar. 01, 2015	Dec. 01, 2014
Goodwill [Line Items]
Goodwill, Impairment Loss		$ 0	$ 0	$ 0
Business acquisition, purchase price allocation, goodwill		402,259,000	402,220,000	402,220,000	$ 441,404,000
Goodwill [Roll Forward]
Goodwill, beginning balance		402,259,000	402,220,000
Additions for current year acquisitions		35,787,000	8,868,000
Purchase accounting adjustments for prior year acquisitions		4,298,000	(2,099,000)
Goodwill, Transfers		0	(1,783,000)
Foreign currency translation adjustments		(940,000)	(4,947,000)
Goodwill, ending balance		$ 441,404,000	402,259,000	$ 402,220,000
Fair Value Inputs, Discount Rate		2.875%
Final Allocation | Via Media Health
Goodwill [Line Items]
Business acquisition, purchase price allocation, goodwill										$ 2,042,000	$ 2,000,000
Final Allocation | PB Systems
Goodwill [Line Items]
Business acquisition, purchase price allocation, goodwill									$ 11,200,000
Final Allocation | Via Media Health, PB Systems, Curepet, and I3 [Member]
Goodwill [Line Items]
Business acquisition, purchase price allocation, goodwill		$ 4,986,000	4,986,000
Goodwill [Roll Forward]
Goodwill, beginning balance		4,986,000
Goodwill, ending balance			$ 4,986,000
Final Allocation | Curepet, Inc.
Goodwill [Line Items]
Business acquisition, purchase price allocation, goodwill								$ (1,783,000)
Final Allocation | PB Systems, EbixHealth JV, IHAC(Hope), and WDEV [Member]
Goodwill [Line Items]
Business acquisition, purchase price allocation, goodwill		40,085,000			40,085,000
Goodwill [Roll Forward]
Goodwill, ending balance		40,085,000
Final Allocation | I3
Goodwill [Line Items]
Business acquisition, purchase price allocation, goodwill												$ 1,600,000
Final Allocation Adjustment [Member] | PB Systems
Goodwill [Line Items]
Business acquisition, purchase price allocation, goodwill									4,298,000
Goodwill [Roll Forward]
Purchase accounting adjustments for prior year acquisitions	$ 4,300,000
Final Allocation Adjustment [Member] | I3
Goodwill [Line Items]
Business acquisition, purchase price allocation, goodwill												$ (2,099,000)
Preliminary Allocation [Member] | PB Systems
Goodwill [Line Items]
Business acquisition, purchase price allocation, goodwill									$ 6,826,000
Preliminary Allocation [Member] | EbixHealth JV [Member]
Goodwill [Line Items]
Business acquisition, purchase price allocation, goodwill							$ 20,839,000
Preliminary Allocation [Member] | IHAC(Hope)
Goodwill [Line Items]
Business acquisition, purchase price allocation, goodwill						$ 1,333,000
Preliminary Allocation [Member] | WDEV
Goodwill [Line Items]
Business acquisition, purchase price allocation, goodwill						$ 13,615,000
RCS
Goodwill [Line Items]
Reporting Unit, Assessed Fair Value					130,000,000
Reporting Unit, Amount of Fair Value in Excess of Carrying Amount					$ 36,800,000
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount					39.00%
Reporting Unit, Excess Carrying Value of Assessed Fair Value					$ 93,200,000
Business acquisition, purchase price allocation, goodwill		68,300,000			$ 68,300,000
Goodwill [Roll Forward]
Goodwill, ending balance		$ 68,300,000
Fair Value Inputs, Discount Rate		15.00%
Minimum [Member] | RCS
Goodwill [Line Items]
Fair Value Inputs, Long-term Revenue Growth Rate		5.00%
Maximum [Member] | RCS
Goodwill [Line Items]
Fair Value Inputs, Long-term Revenue Growth Rate		15.00%