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WEIGHTED AVERAGE SHARE COUNTS | 9 Months Ended
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Sep. 30, 2022
Weighted Average Share Counts |
NET INCOME PER SHARE | (13)WEIGHTED AVERAGE SHARE COUNTS ​ The following table sets forth the computation of basic and diluted shares for the periods indicated (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended September 30, | ​ | Nine Months Ended September 30,
​ |  | 2022 |  | 2021 |  | 2022 |  | 2021
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Shares used in basic earnings per share calculation | ​ | 47,207 |  | 46,984 |  | 47,087 |  | 46,857
Effect of dilutive securities: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
Restricted stock units | ​ | 107 |  | 364 |  | 258 |  | 515
Performance-based restricted stock units | ​ | — |  | — |  | 9 |  | —
Total effects of dilutive securities | ​ | 107 |  | 364 |  | 267 |  | 515
Shares used in dilutive earnings per share calculation | ​ | 47,314 |  | 47,348 |  | 47,354 |  | 47,372
​ For the three months ended September 30, 2022 and 2021, there were Restricted Stock Units (“RSUs”) of 542 thousand and four thousand, respectively, outstanding which were excluded from the computation of diluted net income per share because the effect would have been anti-dilutive. For the nine months ended September 30, 2022 and 2021, there were RSUs of 377 thousand and 78 thousand, respectively, outstanding which were excluded from the computation of diluted net income per share because the effect would have been anti-dilutive.

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