Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2017

Summary of Significant Accounting Policies

Reconciliation of basic weighted average shares outstanding to diluted weighted average shares outstanding

The following is a reconciliation of the Company’s basic weighted average shares outstanding to diluted weighted average shares outstanding during the periods presented (in thousands): 

	Three Months Ended September 30,		Nine Months Ended September 30,
	2016	2017	2016	2017
Basic weighted average number of shares outstanding	306,785	315,463	288,607	315,275
Add: Dilutive effect of non-vested restricted stock units	1,835	—	—	828
Add: Dilutive effect of outstanding stock options	—	—	—	—
Add: Dilutive effect of performance stock units	37	—	—	37
Diluted weighted average number of shares outstanding	308,657	315,463	288,607	316,140
Weighted average number of outstanding equity awards excluded from calculation of diluted earnings per common share(1):
Non-vested restricted stock and restricted stock units	1,251	5,054	6,899	2,293
Outstanding stock options	693	674	706	679
Performance stock units	660	1,293	577	1,002

(1)   The potential dilutive effects of these awards were excluded from the computation of earnings (loss) per common share—assuming dilution because the inclusion of these awards would have been anti-dilutive.