Leases - Narrative (Details) $ in Millions	3 Months Ended
	Mar. 31, 2024 USD ($) lease_term	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($)
Lessee, Lease, Description [Line Items]
Operating leases renewal terms (up to)	5 years
Finance leases renewal terms (up to)	5 years
Lease term (in years)	3 years
Duration of autorenewal features	1 year
Number of consecutive lease terms | lease_term	2
Sales and marketing
Lessee, Lease, Description [Line Items]
Amortization expense	$ 0.5	$ 0.6
AviClear Device
Lessee, Lease, Description [Line Items]
Cloud computing arrangement expected contract renewals (in years)	7 years
Capitalized Cloud Computing Set-up Cost | Other long-term assets
Lessee, Lease, Description [Line Items]
Capitalized contract costs	$ 2.4		$ 2.7
Capitalized Cloud Computing Set-up Cost | Sales and marketing
Lessee, Lease, Description [Line Items]
Amortization expense	0.3	1.0
Lease Installment Costs | Other long-term assets
Lessee, Lease, Description [Line Items]
Capitalized contract costs	1.5		$ 2.1
Lease Installment Costs | Sales and marketing
Lessee, Lease, Description [Line Items]
Amortization expense	$ 0.6	$ 0.5
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease terms of operating leases	1 year
Remaining lease terms of finance leases	1 year
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease terms of operating leases	7 years
Remaining lease terms of finance leases	7 years