Equity Incentive Plans (Tables)

12 Months Ended

Dec. 31, 2013

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, 2010	1,071,096		$	16.05	—	$	65.50	$	32.00
Exercised	(135,196	)	18.18		—	42.46		21.96
Granted	70,266		45.73		—	47.77		46.19
Forfeited	(3,333	)	16.05		—	16.05		16.05
Outstanding at December 31, 2011	1,002,833		$	18.18	—	$	65.50	$	34.41
Exercised	(224,181	)	18.18		—	36.56		23.42
Granted	103,082		44.62		—	47.99		45.60
Forfeited	(396	)	18.18		—	46.69		40.03
Outstanding at December 31, 2012	881,338		$	18.18	—	$	65.50	$	38.51
Exercised	(143,272	)	18.18		—	47.20		30.64
Granted	115,257		46.86		—	58.09		47.86
Forfeited	(12,658	)	36.56		—	60.42		56.90
Outstanding at December 31, 2013	840,665		$	18.18	—	$	65.50	$	40.85

Schedule of Stock Option Expense to be Recognized in the Future

At December 31, 2013, stock-option expense to be recognized in future periods was $1.8 million as follows (in thousands):

	Amount
Year:
2014	$	830
2015	605
2016	308
2017	11
Total	$	1,754

Summary Of Outstanding Options

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

Exercise price range	Options outstanding	Weighted avg. life remaining	Weighted avg. exercise price		Aggregate intrinsic value  (in thousands)
$ 18.18 - 19.99	201,859	5.1
20.00 - 29.99	—	0.0
30.00 - 39.99	25,731	4.3
40.00 - 49.99	502,222	5.7
50.00 - 59.99	17,500	6.5
60.00 - 65.50	93,353	3.0
	840,665	5.2	$	40.85	$	8,537

Summary Of Exercisable Options

he following table summarizes exercisable options at December 31, 2013:

Exercise price range	Options outstanding	Weighted avg. life  remaining	Weighted avg. exercise price		Aggregate  intrinsic value (in thousands)
$ 18.18 - 19.99	201,859	5.1
20.00 - 29.99	—	0.0
30.00 - 39.99	18,460	3.5
40.00 - 49.99	292,290	3.7
50.00 - 59.99	10,000	4.3
60.00 - 65.50	93,353	3.0
	615,962	4.1	$	38.78	$	7,883

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 December 31, 2013	371,864		$	46.00	0.99

Nonvested Shares Unamortized Share-based Compensation Expense to be Recognized in the Future

At December 31, 2013, unamortized share-based compensation expense related to nonvested shares was $8.3 million and will be recognized in future periods as follows (in thousands):

	Amount
Year:
2014	$	3,968
2015	2,892
2016	1,399
Total	$	8,259

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	17,530		58.38
Vested	(10,925	)	44.62
Outstanding at December 31, 2013	17,530		$	58.38	0.36