Leases - Overview (Details) ft² in Thousands, $ in Millions	1 Months Ended	3 Months Ended		18 Months Ended
	May 31, 2019 renewal_option	Mar. 31, 2021 USD ($)	Mar. 31, 2020 USD ($)	May 31, 2022 USD ($)	Sep. 30, 2018 ft²
Lessee, Lease, Description [Line Items]
Minimum lease payments		$ 7.4
Remaining lease term		7 years 2 months 12 days
Discount rate (as a percent)		5.20%
Operating lease payments		$ 0.1	$ 0.3
Forecast
Lessee, Lease, Description [Line Items]
Operating lease income				$ 0.6
Leasehold improvements				$ 1.1
Office Space Sublease
Lessee, Lease, Description [Line Items]
Operating lease sublease land agreement | ft²					45
Number of renewal options | renewal_option	1
Renewal term	5 years