Stock-Based Compensation (Tables)

3 Months Ended

Sep. 30, 2012

The assumptions used in our Black-Scholes valuation related to grants made during the three months ended September 30, 2012 and 2011 were as follows:

(2) Expected life is derived from historical experience.

(3) Expected volatility is based on the implied historical volatility of our stock.

Changes in our stock options for the three months ended September 30, 2012 were as follows:



	Options		Weighted Average Exercise Price		Weighted Average Remaining Life (years)	Aggregate Intrinsic value (in thousands)
Options outstanding, June 30, 2012	2,891,563		$	28.46
Granted	371,056		36.76
Exercised	(78,527	)	22.01
Lapsed and forfeited	(31,584	)	32.07
Options outstanding, September 30, 2012	3,152,508		$	29.57	6.1	$	24,941
Options vested and expected to vest, September 30, 2012	3,088,516		$	29.49	6.0	$	24,702
Options exercisable, September 30, 2012	2,140,539		$	28.09	4.9	$	20,010

Changes in our restricted stock awards for the three months ended September 30, 2012 were as follows:



	Shares		Weighted Average Fair Value
Unvested restricted stock awards, June 30, 2012	24,030		$	28.83
Vested	(21,359	)	29.60
Forfeited	(190	)	29.60
Unvested restricted stock awards, September 30, 2012	2,481		$	22.16

Changes in our time vesting and performance vesting restricted stock units for the three months ended September 30, 2012 were as follows:



	Performance Vesting Stock Units	Performance Vesting Weighted Average Fair Value		Time Vesting Stock Units		Time Vesting Weighted Average Fair Value
Unvested performance vesting and time vesting restricted stock units, June 30, 2012	246,345	$	31.27	971,767		$	30.47
Granted	131,693	36.76		348,772		36.76
Vested	—	—		(218,554	)	30.26
Forfeited	—	—		(23,193	)	32.82
Unvested performance vesting and time vesting restricted stock units, September 30, 2012	378,038	$	32.18	1,078,792		$	32.49