Earnings per share

12 Months Ended

Sep. 30, 2019

Earnings Per Share [Abstract]

Earnings per share

Earnings per share

The weighted average number of shares outstanding used to compute earnings per share was as follows (in thousands):

	Year ended September 30,
	2019	2018	2017
Weighted average shares outstanding	64,498	65,501	65,632
Effect of employee stock options and unvested restricted stock awards	322	431	433
Denominator for diluted earnings per share	64,820	65,932	66,065

For the years ended September 30, 2019, 2018 and 2017, we excluded approximately 10,000, 5,000 and 9,000 unvested restricted stock units, respectively, from the calculation of diluted earnings per share as the effect of including them would have been anti-dilutive.