Leases - Narrative (Details) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) lease_term	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Lessee, Lease, Description [Line Items]
Operating leases renewal terms (up to)	5 years		5 years
Finance leases renewal terms (up to)	5 years		5 years
Lease term (in years)	3 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	$ 0.6	$ 0.5	$ 1.3	$ 1.2
AviClear Device
Lessee, Lease, Description [Line Items]
Cloud computing arrangement expected contract renewals (in years)	7 years		7 years
Capitalized Cloud Computing Set-up Cost | Other Noncurrent Assets
Lessee, Lease, Description [Line Items]
Capitalized contract costs	$ 4.3		$ 4.3		$ 3.3
Capitalized Cloud Computing Set-up Cost | Sales and marketing
Lessee, Lease, Description [Line Items]
Amortization expense	1.1	0.0	2.2	$ 0.0
Lease Installment Costs | Other Noncurrent Assets
Lessee, Lease, Description [Line Items]
Capitalized contract costs	2.6		2.6		$ 1.3
Lease Installment Costs | Sales and marketing
Lessee, Lease, Description [Line Items]
Amortization expense	$ 0.8	$ 0.0	$ 1.3
Minimum
Lessee, Lease, Description [Line Items]
Remaining lease terms of operating leases	1 year		1 year
Remaining lease terms of finance leases	1 year		1 year
Maximum
Lessee, Lease, Description [Line Items]
Remaining lease terms of operating leases	10 years		10 years
Remaining lease terms of finance leases	10 years		10 years