Leases - Additional Information (Details) $ in Millions	1 Months Ended		3 Months Ended		6 Months Ended
	Aug. 31, 2019	Feb. 28, 2015 ft²	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)
Lessee Lease Description [Line Items]
Area of office space | ft²		31,280
Lease expiration date		Nov. 30, 2027
Operating lease, existence of option to extend		true
Operating lease, option to extend					an option to extend the term for a period of three years
Operating lease option to extend term			3 years		3 years
Operating lease cost			$ 0.7	$ 0.3	$ 1.0	$ 0.5
Operating leases, weighted-average remaining lease term			6 years 9 months 18 days		6 years 9 months 18 days
Operating leases, weighted-average discount rate			10.70%		10.70%
Cash paid for operating lease liabilities					$ 0.8	0.5
Right-of-use assets obtained in exchange for new operating lease liabilities					$ 9.8	$ 1.7
Co-located Data Center Space
Lessee Lease Description [Line Items]
Lease expiration date	Aug. 31, 2022
Operating lease, existence of option to extend	true
Operating lease, option to extend					an option to extend the term for a period of three years
Operating lease option to extend term	3 years