Description of Business and Summary of Significant Accounting Policies - Additional Information (Details)	3 Months Ended	12 Months Ended
	Sep. 30, 2020 USD ($)	Dec. 31, 2021 USD ($) product_service_group	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2009 USD ($)
Finite-Lived and Indefinite Lived Intangible Lived Assets [Line Items]
Impairment of intangible asset		$ 0	$ 6,168,000	$ 0
Operating revenue:		994,938,000	625,609,000	580,615,000
Total intangibles		140,700,000	134,806,000
Amortization expense, acquired intangible assets		$ 10,400,000	9,500,000	10,200,000
Number of product/service channels | product_service_group		3
Customer relationships | E-Z Data
Finite-Lived and Indefinite Lived Intangible Lived Assets [Line Items]
Indefinite-lived intangible assets acquired					$ 14,200,000
EbixHealth JV | IHC
Finite-Lived and Indefinite Lived Intangible Lived Assets [Line Items]
Impairment of intangible asset			6,200,000
Customer relationships
Finite-Lived and Indefinite Lived Intangible Lived Assets [Line Items]
Total intangibles		$ 102,446,000	$ 96,616,000
Customer relationships | Minimum
Finite-Lived and Indefinite Lived Intangible Lived Assets [Line Items]
Finite-lived intangible asset, useful life		4 years
Customer relationships | Maximum
Finite-Lived and Indefinite Lived Intangible Lived Assets [Line Items]
Finite-lived intangible asset, useful life		20 years
Customer relationships | E-Z Data
Finite-Lived and Indefinite Lived Intangible Lived Assets [Line Items]
Finite-lived intangible asset, useful life	15 years
Total intangibles	$ 14,200,000
Customer relationships | EbixHealth JV
Finite-Lived and Indefinite Lived Intangible Lived Assets [Line Items]
Finite-lived intangible asset, useful life		10 years
Customer relationships | EbixHealth JV | IHC
Finite-Lived and Indefinite Lived Intangible Lived Assets [Line Items]
Finite-lived intangible asset, useful life			10 years
Amortization expense, acquired intangible assets		$ 500,000
Developed technology
Finite-Lived and Indefinite Lived Intangible Lived Assets [Line Items]
Total intangibles		$ 20,234,000	$ 19,867,000
Developed technology | Minimum
Finite-Lived and Indefinite Lived Intangible Lived Assets [Line Items]
Finite-lived intangible asset, useful life		3 years
Developed technology | Maximum
Finite-Lived and Indefinite Lived Intangible Lived Assets [Line Items]
Finite-lived intangible asset, useful life		15 years
Airport contracts
Finite-Lived and Indefinite Lived Intangible Lived Assets [Line Items]
Total intangibles		$ 4,441,000	4,523,000
Airport contracts | Maximum
Finite-Lived and Indefinite Lived Intangible Lived Assets [Line Items]
Finite-lived intangible asset, useful life		9 years
Store networks
Finite-Lived and Indefinite Lived Intangible Lived Assets [Line Items]
Total intangibles		$ 2,396,000	2,440,000
Store networks | Maximum
Finite-Lived and Indefinite Lived Intangible Lived Assets [Line Items]
Finite-lived intangible asset, useful life		5 years
Dealer networks
Finite-Lived and Indefinite Lived Intangible Lived Assets [Line Items]
Total intangibles		$ 6,534,000	6,653,000
Dealer networks | Minimum
Finite-Lived and Indefinite Lived Intangible Lived Assets [Line Items]
Finite-lived intangible asset, useful life		15 years
Dealer networks | Maximum
Finite-Lived and Indefinite Lived Intangible Lived Assets [Line Items]
Finite-lived intangible asset, useful life		20 years
Brand
Finite-Lived and Indefinite Lived Intangible Lived Assets [Line Items]
Total intangibles		$ 880,000	896,000
Brand | Minimum
Finite-Lived and Indefinite Lived Intangible Lived Assets [Line Items]
Finite-lived intangible asset, useful life		3 years
Brand | Maximum
Finite-Lived and Indefinite Lived Intangible Lived Assets [Line Items]
Finite-lived intangible asset, useful life		15 years
Trademarks
Finite-Lived and Indefinite Lived Intangible Lived Assets [Line Items]
Total intangibles		$ 2,696,000	2,700,000
Trademarks | Minimum
Finite-Lived and Indefinite Lived Intangible Lived Assets [Line Items]
Finite-lived intangible asset, useful life		3 years
Trademarks | Maximum
Finite-Lived and Indefinite Lived Intangible Lived Assets [Line Items]
Finite-lived intangible asset, useful life		15 years
Non-compete agreements
Finite-Lived and Indefinite Lived Intangible Lived Assets [Line Items]
Total intangibles		$ 721,000	759,000
Non-compete agreements | Minimum
Finite-Lived and Indefinite Lived Intangible Lived Assets [Line Items]
Finite-lived intangible asset, useful life		5 years
Non-compete agreements | Maximum
Finite-Lived and Indefinite Lived Intangible Lived Assets [Line Items]
Finite-lived intangible asset, useful life		7 years
Database
Finite-Lived and Indefinite Lived Intangible Lived Assets [Line Items]
Total intangibles		$ 212,000	212,000
Database | Maximum
Finite-Lived and Indefinite Lived Intangible Lived Assets [Line Items]
Finite-lived intangible asset, useful life		10 years
India
Finite-Lived and Indefinite Lived Intangible Lived Assets [Line Items]
Operating revenue:		$ 755,543,000	$ 378,660,000	$ 300,678,000