Leases - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Sep. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Lessee, Lease, Description [Line Items]
Renewal term (in years)		5 years
Option to terminate, term (in years)		1 year
Loss on sublease	$ 4.8
Weighted average remaining lease term (in years)		7 years 6 months
Weighted average discount rate		11.20%
Operating lease payments		$ 13.1	$ 9.2
Lease liabilities arising from obtaining right-of-use assets		1.3	$ 11.3
Future sublease income expected to be earned		4.0
Lease liability, leases not yet commenced		$ 17.5
Sublease Of Office Space
Lessee, Lease, Description [Line Items]
Remaining lease term		1 year 3 months 18 days
Sublease Of Office Space, Denver, Colorado
Lessee, Lease, Description [Line Items]
Remaining lease term		2 years 4 months 24 days
Minimum
Lessee, Lease, Description [Line Items]
Contract term (in years)		1 year
Contract term, leases not yet commenced (in years)		6 years
Maximum
Lessee, Lease, Description [Line Items]
Contract term (in years)		12 years
Contract term, leases not yet commenced (in years)		8 years