Goodwill, Finite-Lived, and Indefinite-Lived Intangibles - Finite-Lived and Indefinite-Lived Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended			12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2009
Finite-lived intangible assets:
Finite-lived intangible assets, gross	$ 139,415	$ 134,806
Accumulated amortization	(86,157)	(83,926)
Finite-lived intangibles, net	53,258	50,880
Indefinite-lived intangibles:
Amortization of acquired intangible assets	2,400		$ 2,500
EbixHealth JV
Indefinite-lived intangibles:
Impairment of intangible asset		6,200
Customer relationships
Finite-lived intangible assets:
Finite-lived intangible assets, gross	$ 101,328	96,616
Customer relationships | EbixHealth JV
Indefinite-lived intangibles:
Finite-lived intangible asset, useful life	10 years
Developed technology
Finite-lived intangible assets:
Finite-lived intangible assets, gross	$ 19,846	19,867
Dealer network
Finite-lived intangible assets:
Finite-lived intangible assets, gross	6,630	6,653
Airport contracts
Finite-lived intangible assets:
Finite-lived intangible assets, gross	$ 4,507	4,523
Indefinite-lived intangibles:
Finite-lived intangible asset, useful life	9 years
Trademarks
Finite-lived intangible assets:
Finite-lived intangible assets, gross	$ 2,704	2,700
Store networks
Finite-lived intangible assets:
Finite-lived intangible assets, gross	$ 2,431	2,440
Indefinite-lived intangibles:
Finite-lived intangible asset, useful life	5 years
Brand
Finite-lived intangible assets:
Finite-lived intangible assets, gross	$ 893	896
Indefinite-lived intangibles:
Finite-lived intangible asset, useful life	15 years
Non-compete agreements
Finite-lived intangible assets:
Finite-lived intangible assets, gross	$ 724	759
Indefinite-lived intangibles:
Finite-lived intangible asset, useful life	5 years
Database
Finite-lived intangible assets:
Finite-lived intangible assets, gross	$ 212	212
Indefinite-lived intangibles:
Finite-lived intangible asset, useful life	10 years
Backlog
Finite-lived intangible assets:
Finite-lived intangible assets, gross	$ 140	140
Customer relationships
Indefinite-lived intangibles:
Customer/territorial relationships	16,647	$ 21,647
Customer relationships | E-Z Data
Indefinite-lived intangibles:
Indefinite-lived intangible assets recognized				$ 14,200
Reclassified intangible as finite-lived	$ 14,200
Finite-lived intangible asset, useful life	15 years