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EARNINGS PER SHARE | 6 Months Ended
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Jun. 30, 2022
EARNINGS PER SHARE |
EARNINGS PER SHARE | 17. EARNINGS PER SHARE Basic and diluted weighted-average shares outstanding are as follows (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended | ​ | Six months ended
​ | ​ | June 30, | ​ | June 30,
​ |  | 2022 |  | 2021 |  | 2022 |  | 2021
Basic weighted average shares outstanding |  | 15,355 |  | 14,406 |  | 15,226 |  | 14,356
Dilutive effect of potential common shares |  | 577 |  | 88 |  | 526 |  | 111
Diluted weighted average shares outstanding |  | 15,932 |  | 14,494 |  | 15,752 |  | 14,467
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ For the three months ended June 30, 2022 and 2021, the anti-dilutive common shares excluded from the calculation of diluted earnings per share were immaterial.

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