Stock-Based Compensation - Changes in Stock Options (Details)	6 Months Ended
	Dec. 31, 2016 USD ($) $ / shares shares
Changes in stock options
Options outstanding, June 30, 2016 | shares	2,547,809
Options, Granted | shares	0
Options, Exercised | shares	(111,683)
Options, Lapsed or Forfeited | shares	(169,129)
Options outstanding, December 31, 2016 | shares	2,266,997
Options vested and expected to vest, December 31, 2016 | shares	2,243,491
Options exercisable, December 31, 2016 | shares	1,747,101
Weighted Average Exercise Price, Options outstanding, June 30, 2016 | $ / shares	$ 33.72
Weighted Average Exercise Price, Granted | $ / shares	0.00
Weighted Average Exercise Price, Exercised | $ / shares	27.34
Weighted Average Exercise Price, Lapsed or Forfeited | $ / shares	30.51
Weighted Average Exercise Price, Options outstanding, December 31, 2016 | $ / shares	34.27
Weighted Average Exercise Price, Option vested and expected to vest, December 31, 2016 | $ / shares	34.32
Weighted Average Exercise Price, Options exercisable, December 31, 2016 | $ / shares	$ 35.96
Weighted Average Remaining Life, Options outstanding, December 31, 2016	4 years 3 months 6 days
Weighted Average Remaining Life, Options vested and expected to vest, December 31, 2016	4 years 3 months 6 days
Weighted Average Remaining Life, Options exercisable, December 31, 2016	3 years
Aggregate Intrinsic value, Options outstanding, December 31, 2016 | $	$ 4,445,000
Aggregate Intrinsic Value, Options vested and expected to vest, December 31, 2016 | $	4,369,000
Aggregate Intrinsic Value, Options exercisable, December 31, 2016 | $	$ 2,153,000