Earnings (Loss) Per Share (Tables)

12 Months Ended

Dec. 31, 2017

Earnings Per Share [Abstract]

Schedule of Weighted-Average Number of Shares Outstanding

The following is a calculation of the basic and diluted weighted average shares outstanding for the periods presented:

	Year Ended December 31,
	2017	2016	2015
	(In thousands)
Basic weighted average common shares outstanding	234,986	183,615	130,186
Dilutive effect of restricted stock awards and PSUs(1)	2,889	—	—
Diluted weighted average common shares outstanding	237,875	183,615	130,186

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(1) No unvested stock awards were included in computing loss per share for the years ended December 31, 2016 and 2015 because the effect was anti-dilutive.

Schedule of Weighted Average Common Shares Excluded From Computation of EPSAntidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

The following is a calculation of weighted average common shares excluded from diluted earnings (loss) per share due to the anti-dilutive effect:

	Year Ended December 31,
	2017	2016	2015
	(In thousands)
Restricted stock awards and PSUs	2,881	5,075	2,842