Share-based Compensation (Tables)

9 Months Ended

Sep. 30, 2018

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

Summary of share-based compensation expense

Share-based compensation expense was as follows:

	For the three months ended September 30,				For the nine months ended September 30,
	2018		2017		2018			2017
Continuing operations
Stock options, net of estimated forfeitures	$	1,932	$	4,315	$	(3,333	)	$	32,142
Restricted stock awards	4,456		3,638		12,905			10,072
Total continuing operations	$	6,388	$	7,953	$	9,572		$	42,214
Discontinued operations
Share-based compensation expense for discontinued operations	173		679		920			1,755
Total continuing and discontinued operations	$	6,561	$	8,632	$	10,492		$	43,969