Income Taxes - Deferred Tax Asset and Liability Policy: Valuation Allowance for Deferred Tax Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Jun. 30, 2017
Income Tax Disclosure [Abstract]
Deferred tax assets, valuation allowance	$ (336)	$ (238)
Amount in retained earnings for bad debt reserve with no deferred tax liability	$ 19,570	$ 19,570