Equity Incentive Plans (Tables)

9 Months Ended

Sep. 30, 2019

Share-based Payment Arrangement, Noncash Expense [Abstract]

Summary Of Share Option Activity

A summary of the Company’s share option activity and related information is as follows:

 

	Number of options		Option price per share					Weighted avg. exercise price
Outstanding at December 31, 2018	234,875		$	19.02	—	$	76.63	$	51.98
Exercised	(118,786	)	19.02		—	61.79		48.71
Granted	1,941		73.84		—	73.84		73.84
Outstanding at September 30, 2019	118,030		$	44.62	—	$	76.63	$	55.63

Summary Of Outstanding Options

The following table summarizes outstanding and exercisable options at September 30, 2019:

	Options outstanding						Options exercisable
Exercise price range	Options outstanding	Weighted avg. life remaining	Weighted avg. exercise price		Aggregate intrinsic value (in thousands)		Options outstanding	Weighted avg. life remaining	Weighted avg. exercise price		Aggregate intrinsic value (in thousands)
$ 44.62 - 49.99	31,445	2.3					31,445	2.3
50.00 - 59.99	31,710	4.8					28,834	4.4
60.00 - 69.99	50,719	5.4					50,719	5.4
70.00 - 76.63	4,156	8.3					1,108	7.4
	118,030	4.5	$	55.63	$	2,505	112,106	4.3	$	55.08	$	2,442

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, 2018	655,056		$	64.16
Granted	208,755		74.13
Vested	(346,145	)	64.66
Forfeited	(8,328	)	66.38
Outstanding at September 30, 2019	509,338		$	67.88	1.11

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 avg. grant date fair value		Weighted avg. life remaining
Outstanding at December 31, 2018	23,571		$	61.25
Granted	27,392		77.19
Vested	(24,727	)	61.62
Outstanding at September 30, 2019	26,236		$	77.54	0.67