Net Income Per Common Share

6 Months Ended

Jun. 30, 2020

Basic net income per common share is calculated by dividing net income by the weighted average number of common shares outstanding during the reporting period. The following table sets forth the computation of basic and diluted net income per common share:


	Three Months Ended June 30,						Six Months Ended June 30,
	2020		2019		2020		2019
Net income	$	22,325	$	28,869	$	35,290	$	62,991

Net income per common share - basic	$	0.47	$	0.62	$	0.74	$	1.35
Net income per common share - diluted	$	0.47	$	0.61	$	0.74	$	1.32

Weighted average common shares outstanding - basic	47,383		46,644		47,371		46,713
Plus dilutive effect of potential common shares	179		780		252		884
Weighted average common shares outstanding - diluted	47,562		47,424		47,623		47,597

Share-based awards to purchase 189 and 62 shares of common stock were not included in the above calculation of diluted net income per common share for the three and six months ended June 30, 2020, respectively, because the effect of these instruments was anti-dilutive. Share-based awards to purchase 66 and 66 shares of common stock were not included in the above calculation of diluted net income per common share for the three and six months ended June 30, 2019, respectively, because the effect of these instruments was anti-dilutive.