Share-Based Compensation - Options Rollforward (Details) - Stock options - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015
Awards
Outstanding at the beginning of the period (in shares)	1,475	1,730	1,975
Granted (in shares)	50	11	58
Exercised (in shares)	(445)	(234)	(254)
Forfeited, expired or repurchased (in shares)	(23)	(32)	(49)
Outstanding at the end of the period (in shares)	1,057	1,475	1,730	1,975
Vested and expected to vest, Awards (in shares)	1,053
Exercisable at the end of year (in shares)	1,006
Stock options, Weighted-Average Exercise Price
Outstanding at the beginning of the period (in dollars per share)	$ 18.02	$ 16.77	$ 15.39
Granted (in dollars per share)	21.43	31.30	59.20
Exercised (in dollars per share)	7.23	7.38	12.62
Forfeited, expired or repurchased (in dollars per share)	30.83	33.04	32.66
Outstanding at the end of the period (in dollars per share)	22.46	$ 18.02	$ 16.77	$ 15.39
Vested and expected to vest, Weighted-Average Exercise Price (in dollars per share)	22.46
Exercisable at the end of the period (in dollars per share)	$ 22.25
Aggregate Intrinsic Value
Exercised (in dollars)	$ 4,243	$ 4,849	$ 6,168
Outstanding at the end of the period (in dollars)	2,584	$ 12,212	$ 19,524	$ 86,983
Vested and expected to vest, Aggregate Intrinsic Value	2,584
Exercisable at the end of the period (in dollars)	$ 2,584
Weighted Average Remaining Contractual Life (yrs.)
Outstanding at the end of the period (in years)	5 years 4 months 24 days	5 years 8 months 12 days	6 years 3 months 18 days	7 years 2 months 12 days
Vested and expected to vest, Weighted Average Remaining Contractual Life	5 years 4 months 24 days
Exercisable at the end of the period (in years)	5 years 2 months 12 days