INCOME TAXES: Summary of Income Tax Benefit (expense) and corresponding effective tax rates (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Income tax benefit (expense)	$ 76,462	$ (719)	$ 71,630	$ (3,459)
Effective tax rate	205.90%	42.30%	332.90%	34.00%