FINANCING ARRANGEMENTS: Schedule of Senior Term Notes (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Jun. 30, 2017	Dec. 31, 2015
Debt Instrument [Line Items]
Senior Term Notes, net	$ 121,096	$ 120,599
Senior Notes | Senior Term Notes, net
Debt Instrument [Line Items]
Principal amount on the Senior Term Notes	123,000	123,000
Unamortized debt discount	(1,439)	(1,815)	$ (3,000)
Unamortized debt issuance costs	(465)	(586)
Senior Term Notes, net	$ 121,096	$ 120,599