Stock-Based Compensation (Details 1) (USD $) In Thousands, except Share data, unless otherwise specified	6 Months Ended
	Dec. 31, 2012 Y
Changes in stock options
Options outstanding, June 30, 2012	2,891,563
Options, Granted	371,056
Options, Exercised	(167,293)
Options, Lapsed and Forfeited	(38,660)
Options outstanding, December 31, 2012	3,056,666
Options vested and expected to vest, December 31, 2012	2,973,731
Options exercisable, December 31, 2012	2,072,141
Weighted Average Exercise Price, Options outstanding, June 30, 2012	$ 28.46
Weighted Average Exercise Price, Granted	$ 36.76
Weighted Average Exercise Price, Exercised	$ 22.50
Weighted Average Exercise Price, Lapsed and Forfeited	$ 31.89
Weighted Average Exercise Price, Options outstanding, December 31, 2012	$ 29.76
Weighted Average Exercise Price, Option vested and expected to vest, December 31, 2012	$ 29.59
Weighted Average Exercise Price, Options exercisable, December 31, 2012	$ 28.27
Weighted Average Remaining Life, Options outstanding, December 31, 2012	5 years 8 months 12 days
Weighted Average Remaining Life, Options vested and expected to vest, December 31, 2012	5.7
Weighted Average Remaining Life, Options exercisable, December 31, 2012	4.5
Aggregate Intrinsic value, Options outstanding, December 31, 2012	$ 31,318
Aggregate Intrinsic Value, Options vested and expected to vest, December 31, 2012	30,946
Aggregate Intrinsic Value, Options exercisable, December 31, 2012	$ 24,312