Leases - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Lessee, Lease, Description [Line Items]
Weighted average remaining lease term	9 years 2 months 1 day		9 years 2 months 1 day
Weighted average discount rate (in percentage)	3.34%		3.34%
Operating lease expense	$ 0.8	$ 0.7	$ 2.0	$ 1.3
Minimum
Lessee, Lease, Description [Line Items]
Lease term	1 year		1 year
Maximum
Lessee, Lease, Description [Line Items]
Lease term	11 years		11 years