Earnings per common share (Tables)

9 Months Ended

Sep. 30, 2018

Earnings Per Share [Abstract]

Weighted average common shares outstanding

A reconciliation of the weighted average common shares outstanding used in the basic and diluted earnings per share calculations was as follows:

	Three Months Ended		Nine Months Ended
	September 30,		September 30,
	2018	2017	2018	2017
	(In thousands)
Weighted average common shares outstanding - basic	196,018	195,304	195,618	195,304
Effect of dilutive performance share awards and restricted stock units	247	479	486	618
Weighted average common shares outstanding - diluted	196,265	195,783	196,104	195,922
Shares excluded from the calculation of diluted earnings per share	114	—	—	—