Earnings per share

9 Months Ended

Sep. 30, 2015

11. Earnings Per Share

The following is a reconciliation of the shares used to compute basic and diluted earnings per share (in thousands):



	Three Months Ended		Nine Months Ended
	September 30,		September 30,
	2015	2014	2015	2014
Weighted average number of common shares outstanding used to compute basic earnings per share	52,654	53,374	52,053	53,955
Dilutive effect of stock-based awards	650	755	706	849
Number of shares used to compute diluted earnings per share	53,304	54,129	52,759	54,804

The amount of anti-dilutive share equivalents outstanding during the three and nine months ended September 30, 2015 and 2014 was insignificant.