Share-based Compensation and Non-Qualified Deferred Compensation Plan (Tables)

3 Months Ended

Mar. 31, 2016

Share-based Compensation [Abstract]

Schedule of Share Based Compensation Shares Authorized Under Stock Option Plans By Exercise Price Range And Intrinsic Value

The following table summarizes outstanding share options, all of which were exercisable, at March 31, 2016:

	Options Outstanding and Exercisable (1)
Range of Exercise Prices	Number	Weighted Average Price
$30.06	105,015	$	30.06
$41.16 - $43.94	119,242	42.46
$48.02 - $75.17	70,948	60.92
Total options	295,205	$	42.49

(1) The aggregate intrinsic value of options outstanding and exercisable at March 31, 2016 was $12.3 million. The aggregate intrinsic value was calculated as the excess, if any, between our closing share price of $84.09 per share on March 31, 2016 and the strike price of the underlying award.

Summary of Share Incentive Plans

The following table summarizes activity under our share incentive plans for the three months ended March 31, 2016:

	Options Outstanding	Weighted Average Exercise / Grant Price		Nonvested Share Awards Outstanding		Weighted Average Exercise /  Grant Price
Options and nonvested share awards outstanding at December 31, 2015	295,205	$	42.49	750,246		$	68.09
Granted	—	—		242,619		73.63
Exercised/Vested	—	—		(312,584	)	66.96
Forfeited	—	—		(4,714	)	70.00
Total options and nonvested share awards outstanding at March 31, 2016	295,205	$	42.49	675,567		$	70.59

Summary of non-qualified deferred compensation share award activity

The following table summarizes the eligible share award activity as recorded in temporary equity for the three months ended March 31, 2016:

(in thousands)	Three Months Ended March 31, 2016
Temporary equity:
Balance at December 31, 2015	$	79,364
Change in classification	2,376
Change in redemption value	6,810
Diversification of share awards	—
Balance at March 31, 2016	$	88,550