Equity Incentive Plans (Tables)

6 Months Ended

Jun. 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	(22,625	)	36.56		—	61.53		48.79
Granted	121,546		61.79		—	61.79		61.79
Forfeited	(702	)	45.20		—	61.79		56.09
Outstanding at June 30, 2015	1,048,433		$	18.18	—	$	65.50	$	44.57

Summary Of Outstanding Options

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

Exercise price range	Options outstanding	Weighted avg. life remaining	Weighted avg. exercise price		Aggregate intrinsic value  (in thousands)
$ 18.18 - 19.99	201,859	3.6
20.00 - 29.99	—	—
30.00 - 39.99	14,646	4.6
40.00 - 49.99	454,735	4.1
50.00 - 59.99	165,174	8.2
60.00 - 65.50	212,019	6.2
	1,048,433	5.1	$	44.57	$	12,478

Summary Of Exercisable Options

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

Exercise price range	Options outstanding	Weighted avg. life  remaining	Weighted avg. exercise price		Aggregate  intrinsic value (in thousands)
$ 18.18 - 19.99	201,859	3.6
20.00 - 29.99	—	—
30.00 - 39.99	14,646	4.6
40.00 - 49.99	411,364	3.8
50.00 - 59.99	85,775	8.0
60.00 - 65.50	123,663	3.7
	837,307	4.2	$	41.95	$	11,891

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	206,185		61.33
Vested	(295,487	)	50.37
Forfeited	(808	)	54.69
Outstanding at June 30, 2015	378,341		$	55.00	1.46

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 June 30, 2015	18,036		$	57.57	0.87