Leases - Narrative (Details) $ in Millions	3 Months Ended
	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($) showroom	Mar. 31, 2021 USD ($)
Leases [Abstract]
Finance lease liability			$ 0.0
Right-of-use asset	$ 0.2	$ 2.2
Number of closed showrooms | showroom		4