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WEIGHTED AVERAGE SHARE COUNTS | 3 Months Ended
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Mar. 31, 2023
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 March 31,
​ |  |  | 2023 |  | 2022
​ | ​ | ​ | ​ | ​ | ​
Shares used in basic earnings per share calculation | ​ |  | 47,234 |  | 47,005
Effect of dilutive securities: | ​ | ​ | ​ | ​ | ​
Restricted stock units | ​ |  | 143 |  | 350
Performance-based restricted stock units | ​ |  | 24 |  | 26
Total effects of dilutive securities | ​ |  | 167 |  | 376
Shares used in dilutive earnings per share calculation | ​ |  | 47,401 |  | 47,381
​ For the three months ended March 31, 2023 and 2022, there were Restricted Stock Units (“RSUs”) of 463 thousand and 193 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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