Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2017

Earnings Per Share [Abstract]

Schedule of Weighted Average Shares Outstanding

The effects of potential common stock were determined using the treasury stock method. Weighted average shares outstanding are shown below (in thousands):

	Three months ended September 30,		Nine months ended September 30,
	2017	2016	2017	2016
Basic shares outstanding	102,303	101,372	102,091	101,231
Effect of potential common stock:
Common stock awards	1,377	1,112	1,306	1,131
Senior subordinated convertible notes	—	38	—	62
Diluted shares outstanding	103,680	102,522	103,397	102,424