Stock-Based Compensation (Details 1) (USD $)	6 Months Ended
	Dec. 31, 2013
Changes in stock options
Options outstanding, June 30, 2013	2,729,068
Options, Granted	342,662
Options, Exercised	(479,164)
Options, Lapsed and Forfeited	(14,836)
Options outstanding, December 31, 2013	2,577,730
Options vested and expected to vest, December 31, 2013	2,535,445
Options exercisable, December 31, 2013	1,759,651
Weighted Average Exercise Price, Options outstanding, June 30, 2013	$ 30.40
Weighted Average Exercise Price, Granted	$ 45.24
Weighted Average Exercise Price, Exercised	$ 26.25
Weighted Average Exercise Price, Lapsed and Forfeited	$ 38.68
Weighted Average Exercise Price, Options outstanding, December 31, 2013	$ 33.10
Weighted Average Exercise Price, Option vested and expected to vest, December 31, 2013	$ 32.97
Weighted Average Exercise Price, Options exercisable, December 31, 2013	$ 30.14
Weighted Average Remaining Life, Options outstanding, December 31, 2013	5 years 9 months 18 days
Weighted Average Remaining Life, Options vested and expected to vest, December 31, 2013	5 years 9 months 18 days
Weighted Average Remaining Life, Options exercisable, December 31, 2013	4 years 7 months 6 days
Aggregate Intrinsic value, Options outstanding, December 31, 2013	$ 48,899
Aggregate Intrinsic Value, Options vested and expected to vest, December 31, 2013	48,439
Aggregate Intrinsic Value, Options exercisable, December 31, 2013	$ 38,586