Note 6 - Net Income Per Share

9 Months Ended

Sep. 30, 2021

Notes to Financial Statements

Earnings Per Share [Text Block]

6. NET INCOME PER SHARE

Basic net income per share is computed by dividing net income by the weighted-average number of common shares outstanding for the period. Diluted net income per share reflects the potential dilution that would occur if outstanding securities or other contracts to issue common stock were exercised or converted into common shares, and calculated using the treasury stock method. Contingently issuable shares, including equity awards with performance conditions or market conditions, are considered outstanding common shares and included in the basic net income per share as of the date that all necessary conditions to earn the awards have been satisfied. Prior to the end of the contingency period, the number of contingently issuable shares included in the diluted net income per share is based on the number of shares, if any, that would be issuable under the terms of the arrangement at the end of the reporting period.

The Company’s RSUs contain forfeitable rights to receive cash dividend equivalents, which are accumulated and paid to the employees when the underlying RSUs vest. Dividend equivalents accumulated on the underlying RSUs are forfeited if the employees do not fulfill the requisite service requirement and, as a result, the awards do not vest. Accordingly, these awards are not treated as participating securities in the net income per share calculation. 

The following table sets forth the computation of basic and diluted net income per share (in thousands, except per-share amounts): 

	Three Months Ended September 30,				Nine Months Ended September 30,
	2021		2020		2021		2020
Numerator:
Net income	$	68,770	$	55,566	$	169,352	$	121,488
Denominator:
Weighted-average outstanding shares - basic		45,970		44,970		45,754		44,737
Effect of dilutive securities		1,882		1,985		2,018		2,082
Weighted-average outstanding shares - diluted		47,852		46,955		47,772		46,819
Net income per share:
Basic	$	1.50	$	1.24	$	3.70	$	2.72
Diluted	$	1.44	$	1.18	$	3.55	$	2.59

Anti-dilutive common stock equivalents were not material in any of the periods presented.