Net Income Per Share - Employee Equity Awards Excluded from the Calculation of Dilutive Weighted Average Shares Outstanding (Details) - shares	3 Months Ended		6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2016	Dec. 31, 2015
Stock Options
Employee equity awards were excluded from the calculation of dilutive weighted average shares outstanding because their effect would be anti-dilutive
Employee equity awards (in shares)	2,260		6,875
Employee Equity Awards
Employee equity awards were excluded from the calculation of dilutive weighted average shares outstanding because their effect would be anti-dilutive
Employee equity awards (in shares)	720,734	1,107,848	873,076	1,072,438