Schedule of Potential Shares of Common Stock Excluded from the Calculation of Diluted Net Income Per Share (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Total anti-dilutive shares	7,440	199	7,450	7,471
0.25% Convertible Senior Note Due 2022
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Total anti-dilutive shares	7,331		7,331	7,331
Common Stock Equivalents
Antidilutive Securities Excluded From Computation Of Earnings Per Share [Line Items]
Total anti-dilutive shares	109	199	119	140