INCOME TAXES: Summary of Income Tax Benefit (expense) and corresponding effective tax rates (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017
Income Tax Disclosure [Abstract]
Income tax benefit (expense)	$ 2,225	$ (3,858)	$ 73,855	$ (7,317)
Effective tax rate	86.40%	48.30%	389.90%	332.70%