Equity Incentive Plans (Tables)

12 Months Ended

Dec. 31, 2015

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	(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
Exercised	(35,963	)	32.50		—	52.72		42.63
Granted	172,178		51.64		—	51.64		51.64
Forfeited	(26,666	)	45.20		—	51.64		50.11
Outstanding at December 31, 2014	950,214		$	18.18	—	$	65.50	$	42.48
Exercised	(476,400	)	18.18		—	61.53		37.42
Granted	121,546		61.79		—	61.79		61.79
Forfeited	(79,055	)	45.20		—	65.50		63.88
Outstanding at December 31, 2015	516,305		$	19.02	—	$	65.50	$	48.42

Schedule of Stock Option Expense to be Recognized in the Future

At December 31, 2015, stock-option expense to be recognized in future periods was $1.9 million as follows (in thousands):



	Amount
Year:
2016	$	904
2017	680
2018	293
2019	—
Total	$	1,877

Summary Of Outstanding Options

The following table summarizes outstanding options at December 31, 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	3.4
20.00 - 29.99	—	—
30.00 - 39.99	7,401	4.2
40.00 - 49.99	202,224	5.0
50.00 - 59.99	111,917	7.6
60.00 - 65.50	133,666	6.4
	516,305	5.7	$	48.42	$	5,731

Summary Of Exercisable Options

he following table summarizes exercisable options at December 31, 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	3.4
20.00 - 29.99	—	—
30.00 - 39.99	7,401	4.2
40.00 - 49.99	158,853	4.6
50.00 - 59.99	32,518	6.7
60.00 - 65.50	45,310	1.1
	305,179	4.0	$	43.87	$	4,705

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 December 31, 2015	390,441		$	54.84	0.98

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

At December 31, 2015, unamortized share-based compensation expense related to nonvested shares was $11.4 million and will be recognized in future periods as follows (in thousands):



	Amount
Year:
2016	$	5,297
2017	3,904
2018	2,153
Total	$	11,354

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 December 31, 2015	18,036		$	57.57	0.37