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Computation of Net Earnings per Share | 3 Months Ended
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Mar. 31, 2021
Computation of Net Earnings per Share |
Computation of Net Earnings per Share | Note 6. Computation of Net Earnings per Share ​ Basic earnings per share is computed by dividing income available to common stockholders (the numerator) by the weighted-average number of common shares outstanding (the denominator) for the period. The computation of diluted earnings per share is similar to basic earnings per share, except that the denominator is increased by the number of additional common shares that would have been outstanding if the potentially dilutive common shares issuable on exercise of stock options and vesting of RSUs had been issued, calculated using the treasury stock method. ​ The components of net earnings per share are as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended | ​
​ | ​ | March 31, | ​
​ |  | 2021 |  | 2020 |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Net income available to common stockholders | ​ | $ | 16,480 | ​ | $ | 11,221 | ​
Weighted average common shares outstanding used in computing basic income per share | ​ |  | 33,715 | ​ |  | 32,872 | ​
Incremental options and RSUs | ​ |  | 928 | ​ |  | 1,185 | ​
Weighted average common shares used in computing diluted net income per share | ​ |  | 34,643 | ​ |  | 34,057 | ​
Net income per share | ​ | ​ | ​ | ​ | ​ | ​ | ​
Basic | ​ | $ | 0.49 | ​ | $ | 0.34 | ​
Diluted | ​ | $ | 0.48 | ​ | $ | 0.33 | ​
​ ​ Diluted weighted average common shares outstanding does not include 1,429 and 1,675 common equivalent shares issuable with respect to outstanding equity awards for the three-month periods ended March 31, 2021 and 2020, respectively, as their effect would have been anti-dilutive.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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