Quarterly Financial Information (unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended												12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Quarterly Financial Information Disclosure [Abstract]
Total revenues	$ 104,681	$ 92,800	$ 87,387	$ 79,103	$ 80,046	$ 74,608	$ 72,574	$ 71,066	$ 70,204	$ 66,813	$ 64,712	$ 63,753	$ 363,971	$ 298,294	$ 265,482
Gross Profit	66,243	57,863	56,455	53,916	57,524	52,183	51,995	51,464	53,760	49,004	46,013	44,268
Operating income	33,081	27,911	26,539	25,690	27,661	24,293	23,564	24,763	25,824	21,968	20,423	20,499	113,221	100,281	88,714
Net income attributable to Ebix, Inc.	$ 26,573	$ 24,184	$ 23,434	$ 26,427	$ 24,629	$ 24,067	$ 22,992	$ 22,159	$ 21,929	$ 20,232	$ 19,036	$ 18,336	$ 100,618	$ 93,847	$ 79,533
Basic (in dollars per share)	$ 0.84	$ 0.77	$ 0.74	$ 0.83	$ 0.76	$ 0.74	$ 0.70	$ 0.67	$ 0.65	$ 0.59	$ 0.54	$ 0.51	$ 3.19	$ 2.88	$ 2.29
Diluted (in dollars per share)	$ 0.84	$ 0.76	$ 0.74	$ 0.83	$ 0.76	$ 0.74	$ 0.70	$ 0.67	$ 0.65	$ 0.59	$ 0.54	$ 0.51	$ 3.17	$ 2.86	$ 2.28