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EARNINGS PER SHARE | 6 Months Ended
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Jun. 30, 2020
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, | ​
​ |  | 2020 |  | 2019 |  | 2020 |  | 2019 |
Basic weighted average shares outstanding |  | 9,509 |  | 9,408 |  | 9,474 |  | 9,378 |
Dilutive effect of equity awards |  | 27 |  | 48 |  | 44 |  | 41 |
Diluted weighted average shares outstanding |  | 9,536 |  | 9,456 |  | 9,518 |  | 9,419 |
​ For the three and six months ended June 30, 2020 and 2019, the anti-dilutive common shares excluded from the calculation of diluted earnings per share were immaterial.

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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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