Statements of Operations-Additional Information (Detail Textuals) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Mar. 31, 2017	Mar. 31, 2016
Foreign deferred tax assets
Valuation Allowance [Line Items]
Deferred income taxes valuation allowance	$ (3,780)		$ (3,780)
Employee stock options
Valuation Allowance [Line Items]
Stock option windfall tax benefit	$ 1,442		$ 1,442
Domestic deferred tax assets
Valuation Allowance [Line Items]
Deferred income taxes valuation allowance		$ (2,536)		$ (21,323)