Net Income Per Share (Tables)

9 Months Ended

Sep. 30, 2018

Earnings Per Share [Abstract]

Weighted average number of shares used to calculate basic and diluted net income per share

The weighted average number of shares used to calculate basic and diluted net income per share were as follows:

	Three Months Ended		Nine Months Ended
	September 30, 2018	October 1, 2017	September 30, 2018	October 1, 2017
Common stock:
Weighted average basic shares outstanding	237,696	243,354	238,872	245,073
Dilutive effect of stock options and restricted shares	7,070	8,383	7,574	8,103
Weighted average diluted shares outstanding	244,766	251,737	246,446	253,176