Business Acquisitions (Narrative) (Details) - USD ($)											3 Months Ended	12 Months Ended
	Nov. 02, 2016	Jul. 02, 2016	Sep. 02, 2015	Jun. 02, 2015	Mar. 02, 2015	Dec. 02, 2014	Nov. 03, 2014	May 22, 2014	Jan. 27, 2014	May 04, 2012	Jun. 30, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2012	Nov. 01, 2016	Jul. 01, 2016	Sep. 01, 2015	Jun. 01, 2015	Mar. 03, 2015	Mar. 01, 2015	Dec. 01, 2014	May 21, 2014
Business Acquisition [Line Items]
Business Acquisition, Earnout Accrual Adjustment												$ 1,344,000	$ 1,533,000	$ 10,237,000
Derivative Liability												8,510,000	4,277,000	5,367,000
Contingent liability for accrued earn-out acquisition consideration												6,589,000	2,571,000
Contingent liability for accrued earn-out acquisition consideration												1,921,000	1,706,000
Business acquisition, purchase price allocation, goodwill												441,404,000	402,259,000	402,220,000
Goodwill, Purchase Accounting Adjustments												(4,298,000)	2,099,000
Goodwill												441,404,000	402,259,000	402,220,000
Payments to Acquire Interest in Joint Venture												$ 696,000	6,000,000	0
WDEV
Business Acquisition [Line Items]
Derivative, Term of Contract	38 months											38 months
Payments to Acquire Business, Held in Escrow	$ 2,900,000											$ 2,900,000
Business acquisition, cost of acquired entity, cash paid	10,500,000
WDEV | Preliminary Allocation [Member]
Business Acquisition [Line Items]
Business acquisition, purchase price allocation, goodwill																$ 13,615,000
Goodwill																13,615,000
Hope [Member]
Business Acquisition [Line Items]
Business acquisition, cost of acquired entity, cash paid	$ 1,720,000
Via Media Health
Business Acquisition [Line Items]
Derivative Liability												0
Derivative, Term of Contract					24 months
Business acquisition, cost of acquired entity, cash paid					$ 1,000,000
Via Media Health | Customer Relationships
Business Acquisition [Line Items]
Intangible Assets, Net (Excluding Goodwill)																					$ 383,000
Via Media Health | Technology
Business Acquisition [Line Items]
Intangible Assets, Net (Excluding Goodwill)																					101,000
Via Media Health | Final Allocation
Business Acquisition [Line Items]
Business acquisition, purchase price allocation, goodwill																				$ 2,042,000	2,000,000
Goodwill																				$ 2,042,000	2,000,000
PB Systems
Business Acquisition [Line Items]
Derivative Liability												0
Derivative, Term of Contract				24 months
Business acquisition, cost of acquired entity, cash paid				$ 12,400,000
PB Systems | Customer Relationships
Business Acquisition [Line Items]
Intangible Assets, Net (Excluding Goodwill)																			$ 2,100,000
PB Systems | Final Allocation
Business Acquisition [Line Items]
Business acquisition, purchase price allocation, goodwill																			11,200,000
Goodwill																			11,200,000
PB Systems | Final Allocation Adjustment [Member]
Business Acquisition [Line Items]
Business acquisition, purchase price allocation, goodwill																			4,298,000
Finite-Lived Intangible Assets, Purchase Accounting Adjustments											$ (8,200,000)
Deferred Tax Liability, Purchase Accounting Adjustment											(3,200,000)
Increase (Decrease) in Derivative Liabilities											(664,000)
Goodwill, Purchase Accounting Adjustments											$ (4,300,000)
Goodwill																			4,298,000
PB Systems | Preliminary Allocation [Member]
Business Acquisition [Line Items]
Business acquisition, purchase price allocation, goodwill																			6,826,000
Goodwill																			6,826,000
PB Systems | Preliminary Allocation [Member] | Customer Relationships
Business Acquisition [Line Items]
Intangible Assets, Net (Excluding Goodwill)																			10,300,000
Curepet, Inc.
Business Acquisition [Line Items]
Derivative Liability									$ 5,000,000			0	0
Payments to acquire cost method investment										$ 2,000,000
Cash consideration offset against open receivable balances due to Ebix, Inc. from CurePet									$ 1,350,000
Derivative, Term of Contract									36 months
Purchase Price of Business Acquisition, Cost of Acquired Entity									$ 6,350,000
Curepet, Inc. | Final Allocation
Business Acquisition [Line Items]
Business acquisition, purchase price allocation, goodwill																		$ (1,783,000)
Goodwill																		$ (1,783,000)
Healthcare Magic
Business Acquisition [Line Items]
Derivative Liability												0
Derivative, Term of Contract								24 months
Business acquisition, cost of acquired entity, cash paid								$ 6,000,000
Healthcare Magic | Customer Relationships
Business Acquisition [Line Items]
Intangible Assets, Net (Excluding Goodwill)																							$ 452,000
Healthcare Magic | Technology
Business Acquisition [Line Items]
Intangible Assets, Net (Excluding Goodwill)																							100,000
Healthcare Magic | Trademarks and Trade Names
Business Acquisition [Line Items]
Intangible Assets, Net (Excluding Goodwill)																							59,000
Healthcare Magic | Noncompete Agreements
Business Acquisition [Line Items]
Intangible Assets, Net (Excluding Goodwill)																							226,000
Healthcare Magic | Final Allocation
Business Acquisition [Line Items]
Business acquisition, purchase price allocation, goodwill																							5,600,000
Goodwill																							5,600,000
Vertex
Business Acquisition [Line Items]
Derivative Liability												0
Business acquisition, cost of acquired entity, cash paid							$ 27,250,000
Vertex | Customer Relationships
Business Acquisition [Line Items]
Intangible Assets, Net (Excluding Goodwill)							2,500,000
Vertex | Technology
Business Acquisition [Line Items]
Intangible Assets, Net (Excluding Goodwill)							235,000
Vertex | Final Allocation
Business Acquisition [Line Items]
Business acquisition, purchase price allocation, goodwill							27,700,000
Goodwill							27,700,000
Oakstone
Business Acquisition [Line Items]
Business acquisition, cost of acquired entity, cash paid						$ 31,370,000
Deferred Revenue						6,500,000
Payments to Acquire Businesses, Net						23,720,000
Net working capital adjustment						7,650,000
Oakstone | Customer Relationships
Business Acquisition [Line Items]
Intangible Assets, Net (Excluding Goodwill)						1,700,000
Oakstone | Technology
Business Acquisition [Line Items]
Intangible Assets, Net (Excluding Goodwill)						501,000
Oakstone | Final Allocation
Business Acquisition [Line Items]
Business acquisition, purchase price allocation, goodwill						28,800,000
Goodwill						28,800,000
I3
Business Acquisition [Line Items]
Derivative Liability												0
Business acquisition, cost of acquired entity, cash paid						$ 2,000,000
I3 | Customer Relationships
Business Acquisition [Line Items]
Intangible Assets, Net (Excluding Goodwill)																						$ 310,000
I3 | Technology
Business Acquisition [Line Items]
Intangible Assets, Net (Excluding Goodwill)																						48,000
I3 | Final Allocation
Business Acquisition [Line Items]
Business acquisition, purchase price allocation, goodwill																						1,600,000
Goodwill																						1,600,000
I3 | Final Allocation Adjustment [Member]
Business Acquisition [Line Items]
Business acquisition, purchase price allocation, goodwill																						(2,099,000)
Goodwill																						(2,099,000)
Minimum [Member] | Via Media Health
Business Acquisition [Line Items]
Derivative Liability																					372,000
Maximum [Member] | WDEV
Business Acquisition [Line Items]
Derivative Liability																$ 15,700,000
Maximum [Member] | PB Systems
Business Acquisition [Line Items]
Derivative Liability																			$ 8,000,000
Maximum [Member] | Curepet, Inc.
Business Acquisition [Line Items]
Derivative Liability									5,000,000.0
Maximum [Member] | Healthcare Magic
Business Acquisition [Line Items]
Derivative Liability																							$ 12,360,000
Maximum [Member] | Vertex
Business Acquisition [Line Items]
Derivative Liability							$ 2,000,000
Maximum [Member] | I3
Business Acquisition [Line Items]
Derivative Liability																						$ 4,000,000
Curepet, Inc.
Business Acquisition [Line Items]
Payments to acquire cost method investment										$ 2,000,000					$ 2,000,000
EbixHealth JV [Member]
Business Acquisition [Line Items]
Non-cash Payments To Acquire Interest In Joint Venture			$ 2,000,000						$ 2,000,000					$ 2,000,000
Equity Method Investment, Ownership Percentage Increase (Decrease)		11.00%
Payments to Acquire Interest in Joint Venture		$ 2,000,000	$ 6,000,000
Equity Method Investment, Ownership Percentage														40.00%			51.00%	40.00%
Performance Bonus [Member] | Via Media Health
Business Acquisition [Line Items]
Derivative Liability																					$ 1,000,000
Contingent Accrued Earn-out Acquisition Consideration
Business Acquisition [Line Items]
Derivative Liability												$ 8,500,000	$ 4,300,000