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CAPITAL STOCK (Tables) | 12 Months Ended
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Dec. 31, 2020
Equity [Abstract] |
Schedule of Activity Related to Common Stock Outstanding | The activity related to outstanding common stock and common stock held in treasury was as follows:
| December 31,
| 2020 |  | 2019 |  | 2018
Common Stock: | Quantity (in thousands)
Balance, beginning of period | 17,460 |  |  | 17,401 |  |  | 17,316 |
Issuance of shares for compensation net of withholding | 54 |  |  | 59 |  |  | 85 |
Issuance of common stock related to equity distribution agreements | 46 |  |  | — |  |  | — |
Issuance of common stock related to purchase of businesses | 1,481 |  |  | — |  |  | — |
Balance, end of period | 19,041 |  |  | 17,460 |  |  | 17,401 |

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- Definition Tabular disclosure of the change in common stock outstanding. + References No definition available. + Details
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