Equity Incentive Plans (Tables)

9 Months Ended

Sep. 30, 2015

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, 2014	950,214		$	18.18	—	$	65.50	$	42.48
Exercised	(438,236	)	18.18		—	61.53		37.12
Granted	121,546		61.79		—	61.79		61.79
Forfeited	(79,055	)	45.20		—	65.50		63.88
Outstanding at September 30, 2015	554,469		$	19.02	—	$	65.50	$	47.90

Summary Of Outstanding Options

The following table summarizes outstanding options at September 30, 2015:

Exercise price range	Options outstanding	Weighted avg. life remaining	Weighted avg. exercise price		Aggregate intrinsic value  (in thousands)
$ 19.02 - 19.99	61,097	3.6
20.00 - 29.99	—	—
30.00 - 39.99	12,196	4.4
40.00 - 49.99	235,593	4.6
50.00 - 59.99	111,917	7.8
60.00 - 65.50	133,666	6.7
	554,469	5.6	$	47.90	$	3,557

Summary Of Exercisable Options

The following table summarizes exercisable options at September 30, 2015:

Exercise price range	Options outstanding	Weighted avg. life  remaining	Weighted avg. exercise price		Aggregate  intrinsic value (in thousands)
$ 19.02 - 19.99	61,097	3.6
20.00 - 29.99	—	—
30.00 - 39.99	12,196	4.4
40.00 - 49.99	192,222	4.1
50.00 - 59.99	32,518	6.9
60.00 - 65.50	45,310	1.3
	343,343	3.9	$	43.54	$	3,347

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, 2014	468,451		$	49.29
Granted	218,285		60.69
Vested	(295,487	)	50.37
Forfeited	(808	)	54.69
Outstanding at September 30, 2015	390,441		$	54.84	1.13

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, 2014	19,685		$	53.55
Granted	18,036		57.57
Vested	(19,685	)	53.55
Outstanding at September 30, 2015	18,036		$	57.57	0.62