Equity Incentive Plans (Tables)

3 Months Ended

9 Months Ended

Mar. 31, 2013

Sep. 30, 2012

Share-based Compensation [Abstract]

Summary Of Share Option Activity

A summary of the Company’s share option activity and related information is as follows:

	Number of shares		Option price per share					Weighted avg. exercise price
Outstanding at December 31, 2012	881,338		$	18.18	—	$	65.50	$	38.51
Exercised	(75,399	)	18.18		—	47.20		23.89
Granted	107,757		46.86		—	47.21		47.15
Forfeited	(2,658	)	36.56		—	46.69		43.65
Outstanding at March 31, 2013	911,038		$	18.18	—	$	65.50	$	40.72

Summary Of Outstanding Options

The following table summarizes outstanding options at March 31, 2013:

Exercise price range	Options outstanding	Weighted avg. life remaining	Weighted avg. exercise price		Aggregate intrinsic value  (in thousands)
$ 18.18 - 19.99	206,505	5.9
20.00 - 29.99	3,333	0.1
30.00 - 39.99	75,305	2.9
40.00 - 49.99	512,542	6.4
50.00 - 59.99	10,000	5.1
60.00 - 65.50	103,353	3.8
	911,038	5.7	$	40.72	$	11,591

Summary Of Exercisable Options

The following table summarizes exercisable options at March 31, 2013:

Exercise price range	Options outstanding	Weighted avg. life  remaining	Weighted avg. exercise price		Aggregate  intrinsic value (in thousands)
$ 18.18 - 19.99	194,005	5.8
20.00 - 29.99	3,333	0.1
30.00 - 39.99	66,784	2.4
40.00 - 49.99	291,204	4.3
50.00 - 59.99	10,000	5.1
60.00 - 65.50	103,353	3.8
	668,679	4.5	$	39.28	$	9,812

Summary Of Nonvested Share Activity

A summary of the Company’s nonvested share activity and related information is as follows:

	Number  of shares		Weighted avg. grant  date fair value		Weighted avg. life remaining
Outstanding at December 31, 2012	322,808		$	42.52
Granted	198,833		47.15
Vested	(145,570	)	39.88
Forfeited	(4,207	)	45.39
Outstanding at March 31, 2013	371,864		$	46.00	1.74

Summary Of Restricted Share Unit Activity

A summary of the Company’s restricted share unit activity and related information is as follows:

	Number  of Shares	Weighted Average Grant Date Fair Value		Weighted Average Life Remaining
Outstanding at December 31, 2012	10,925	$	44.62
Granted	—	—
Vested	—	—
Outstanding at March 31, 2013	10,925	$	44.62	0.10