Stock-Based Compensation, Stock Option Plans (Details) - Stock options [Member]	9 Months Ended
	Mar. 31, 2018 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Options outstanding, beginning	2,800,007
Options Granted	0
Options Exercised	(1,031,144)
Options Cancelled	(21,591)
Options outstanding, ending	1,747,272
Options exercisable, number of shares	1,740,428
Options vested and expected to vest, number of shares	1,747,119
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Options outstanding, weighted average exercise price, beginning (per share) | $ / shares	$ 26.92
Options granted, weighted average exercise price (per share) | $ / shares	0.00
Options exercised, weighted average exercise price (per share) | $ / shares	25.94
Options cancelled, weighted average exercise price (per share) | $ / shares	25.81
Options outstanding, weighted average exercise price, ending (per share) | $ / shares	27.65
Options exercisable, weighted average exercise price (per share) | $ / shares	27.63
Options vested and expected to vest, weighted average exercise price (per share) | $ / shares	$ 27.64
Share-based Compensation Arrangement by Share-based Payment Award, Options, Additional Disclosures [Abstract]
Options outstanding, weighted average remaining contractual term (in years)	2 years 4 days
Options exercisable, weighted average remaining contractual term (in years)	2 years
Options vested and expected to vest, weighted average remaining contractual term (in years)	2 years
Options outstanding, aggregate intrinsic value | $	$ 54,470,797
Options exercisable, aggregate intrinsic value | $	54,281,147
Options vested and expected to vest, aggregate intrinsic value | $	54,466,463
Unrecognized compensation costs related to unvested units | $	$ 100,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Nonvested, Number of Shares	100,000
Weighted average period of recognition for unrecognized compensation costs (in years)	3 months 9 days