Earnings per Share (Tables)

12 Months Ended

Dec. 31, 2017

Earnings Per Share [Abstract]

Computation of Basic and Diluted Net Income (Loss) Per Share

The following table sets forth the computation of basic and diluted earnings per share:

	Years ended December 31:
	2015			2016			2017
	(In thousands, except per share data)
Numerator:
Net (loss) income from continuing operations	$	(127,090	)	$	(96,378	)	$	16,006
Net income (loss) from discontinued operations	(20		)	—			—
	$	(127,110	)	$	(96,378	)	$	16,006
Denominator:
Denominator for basic earnings per share – weighted-average common shares outstanding	104,605			122,132			161,141
Effect of dilutive securities: Stock options and restricted shares	—			—			1,703
Denominator for diluted earnings per share – adjusted weighted-average shares and assumed exercise of options and restricted shares	104,605			122,132			162,844
Net (Loss) income per common share - basic
Continuing operations	$	(1.21	)	$	(0.79	)	$	0.10
Discontinued operations	—			—			—
	$	(1.21	)	$	(0.79	)	$	0.10

Net (loss) income per common share - diluted
Continuing operations	$	(1.21	)	$	(0.79	)	$	0.10
Discontinued operations	—			—			—
	$	(1.21	)	$	(0.79	)	$	0.10