Stock-Based Compensation (Details 1) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Sep. 30, 2012 Y
Changes in stock options
Options outstanding, June 30, 2012	2,891,563
Options, Granted	371,056
Options, Exercised	(78,527)
Options, Lapsed and Forfeited	(31,584)
Options outstanding, September 30, 2012	3,152,508
Options vested and expected to vest, September 30, 2012	3,088,516
Options exercisable, September 30, 2012	2,140,539
Weighted Average Exercise Price, Options outstanding, June 30, 2012	$ 28.46
Weighted Average Exercise Price, Granted	$ 36.76
Weighted Average Exercise Price, Exercised	$ 22.01
Weighted Average Exercise Price, Lapsed and Forfeited	$ 32.07
Weighted Average Exercise Price, Options outstanding, September 30, 2012	$ 29.57
Weighted Average Exercise Price, Option vested and expected to vest, September 30, 2012	$ 29.49
Weighted Average Exercise Price, Options exercisable, September 30, 2012	$ 28.09
Weighted Average Remaining Life, Options outstanding, September 30, 2012	6 years 0 months 26 days
Weighted Average Remaining Life, Options vested and expected to vest, September 30, 2012	6.0
Weighted Average Remaining Life, Options exercisable, September 30, 2012	4.9
Aggregate Intrinsic value, Options outstanding, September 30, 2012	$ 24,941
Aggregate Intrinsic Value, Options vested and expected to vest, September 30, 2012	24,702
Aggregate Intrinsic Value, Options exercisable, September 30, 2012	$ 20,010