Equity Incentive Plans (Tables)

3 Months Ended

Mar. 31, 2014

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, 2013	840,665		$	18.18	—	$	65.50	$	40.85
Exercised	(19,105	)	32.50		—	47.77		40.19
Granted	172,178		51.64		—	51.64		51.64
Outstanding at March 31, 2014	993,738		$	18.18	—	$	65.50	$	42.74

Summary Of Outstanding Options

The following table summarizes outstanding options at March 31, 2014:

Exercise price range	Options outstanding	Weighted avg. life remaining	Weighted avg. exercise price		Aggregate intrinsic value  (in thousands)
$ 18.18 - 19.99	201,859	4.9
20.00 - 29.99	—	0.0
30.00 - 39.99	16,060	5.8
40.00 - 49.99	492,788	5.4
50.00 - 59.99	189,678	9.4
60.00 - 65.50	93,353	2.8
	993,738	5.8	$	42.74	$	11,680

Summary Of Exercisable Options

The following table summarizes exercisable options at March 31, 2014:

Exercise price range	Options outstanding	Weighted avg. life  remaining	Weighted avg. exercise price		Aggregate  intrinsic value (in thousands)
$ 18.18 - 19.99	201,859	4.9
20.00 - 29.99	—	0.0
30.00 - 39.99	14,810	5.8
40.00 - 49.99	343,634	4.2
50.00 - 59.99	10,000	4.1
60.00 - 65.50	93,353	2.8
	663,656	4.2	$	39.40	$	10,340

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, 2013	371,864		$	46.00
Granted	280,193		51.64
Vested	(149,324	)	45.26
Outstanding at March 31, 2014	502,733		$	49.36	1.76

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, 2013	17,530	$	58.38
Granted	—	—
Vested	—	—
Outstanding at March 31, 2014	17,530	$	58.38	0.11