FINANCING ARRANGEMENTS: Sale and Leaseback Transaction (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Mar. 31, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019
Debt Disclosure [Abstract]
Term of contract			15 years	10 years
Short-term financial liability	$ 0.9	$ 0.9
Weighted average lease term	13 years 10 months 24 days	13 years 10 months 24 days
Weighted average discount rate	3.46%	3.46%
Interest expense	$ 0.3	$ 0.8