Common and Common Equivalent Shares

6 Months Ended

Jun. 30, 2022

9. Common and Common Equivalent Shares:

Basic net income per common share is calculated by dividing net income by the weighted average number of common shares outstanding during the period. Diluted net income per common share is calculated by dividing net income by the weighted average number of common and potential common shares outstanding during the period. Potential common shares consist of outstanding restricted stock and stock options and is calculated using the treasury stock method.

The calculation of shares used in the basic and diluted net income per common share calculation for the three and six months ended June 30, 2022 and 2021 is as follows (in thousands):


	Three Months Ended June 30,				Six Months Ended June 30,
	2022		2021		2022		2021
Weighted average number of common shares outstanding		85,078		84,912		85,190		84,660
Weighted average number of dilutive common share equivalents		541		1,021		724		993
Weighted average number of common and common equivalent shares outstanding		85,619		85,933		85,914		85,653
Antidilutive securities not included in the diluted net income per common share calculation		569		13		409		15