Share-Based Compensation (Tables)

9 Months Ended

Sep. 30, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of share-based compensation expenses

Total share-based compensation expenses were comprised as follows (in thousands):

	Three months ended September 30,						Nine months ended September 30,
	2017			2016			2017		2016
Option plan	$	5,766		$	6,210		$	12,837	$	17,772
Other share-based awards	(3,919		)	(3,139		)	18,191		15,680
Total share-based compensation before tax	1,847			3,071			31,028		33,452
Tax benefit	686			1,146			11,524		12,478
Total share-based compensation expense included in net income	$	1,161		$	1,925		$	19,504	$	20,974