Note 6. Leases - Supplemental Cash Flow relating to Leases (Details) - USD ($) $ in Millions	6 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating lease payments impacting lease liability	$ 2.5	$ 2.4
Non-cash impact of obtaining new right-of-use assets	$ 5.1	$ 0.1
Operating Lease, Weighted Average Remaining Lease Term	4 years 7 months 6 days	6 years
Operating Lease, Weighted Average Discount Rate, Percent	4.50%	4.60%