Stock-Based Compensation - Stock Option Activity (Details) - Stock Options - USD ($) $ / shares in Units, $ in Thousands	9 Months Ended	12 Months Ended
	Mar. 31, 2017	Jun. 30, 2016
Stock options activity
Outstanding, beginning of period (in shares)	1,314,142
Granted (in shares)	459,785
Exercised (in shares)	(295,059)
Cancelled / Forfeited (in shares)	(46,024)
Outstanding, end of period (in shares)	1,432,844	1,314,142
Vested and exercisable, end of period (in shares)	777,059
Vested and expected to vest, end of period (in shares)	1,369,672
Weighted Average Exercise Price
Outstanding, beginning of period (in dollars per share)	$ 32.47
Granted (in dollars per share)	45.54
Exercised (in dollars per share)	26.99
Cancelled / Forfeited (in dollars per share)	39.58
Outstanding, end of period (in dollars per share)	37.57	$ 32.47
Vested and exercisable, end of period (in dollars per share)	32.29
Vested and expected to vest, end of period (in dollars per share)	$ 37.25
Weighted Average Remaining Contractual Term
Outstanding, end of period	7 years 7 months 4 days	7 years 2 months 24 days
Vested and exercisable, end of period	6 years 6 months 10 days
Vested and expected to vest, end of period	7 years 6 months 10 days
Aggregate Intrinsic Value
Outstanding, end of period	$ 30,597	$ 12,340
Vested and exercisable, end of period	20,695
Vested and expected to vest, end of period	$ 29,686