Goodwill, Finite-Lived, and Indefinite-Lived Intangibles - Finite-Lived and Indefinite-Lived Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Finite-lived intangible assets:
Finite-lived intangible assets, gross	$ 140,437		$ 140,700
Accumulated amortization	(96,303)		(93,905)
Finite-lived intangibles, net	44,134		46,795
Indefinite-lived intangibles:
Amortization of acquired intangible assets	2,500	$ 2,400
Customer relationships
Indefinite-lived intangibles:
Customer/territorial relationships	16,647		16,647
Customer relationships
Finite-lived intangible assets:
Finite-lived intangible assets, gross	102,492		102,446
Developed technology
Finite-lived intangible assets:
Finite-lived intangible assets, gross	20,166		20,234
Dealer network
Finite-lived intangible assets:
Finite-lived intangible assets, gross	6,432		6,534
Airport contracts
Finite-lived intangible assets:
Finite-lived intangible assets, gross	4,370		4,441
Trademarks
Finite-lived intangible assets:
Finite-lived intangible assets, gross	2,684		2,696
Store networks
Finite-lived intangible assets:
Finite-lived intangible assets, gross	2,357		2,396
Brand
Finite-lived intangible assets:
Finite-lived intangible assets, gross	866		880
Non-compete agreements
Finite-lived intangible assets:
Finite-lived intangible assets, gross	718		721
Database
Finite-lived intangible assets:
Finite-lived intangible assets, gross	212		212
Backlog
Finite-lived intangible assets:
Finite-lived intangible assets, gross	$ 140		$ 140