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Stockholders' Equity - (Tables) | 6 Months Ended
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Jun. 30, 2021
Equity [Abstract] |
Schedule of Common Stock | The following table shows the beginning and ending balances of our issued and outstanding common stock for the three and six months ended June 30, 2021 and 2020:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2021 | 2020 | 2021 | 2020
Shares issued and outstanding, beginning balance | 65,881,233 |  | 68,470,050 |  |  | 66,456,663 |  | 69,065,491 |
Issuance of common stock from vested restricted stock units | 130,560 |  | 168,621 |  |  | 346,518 |  | 342,250 |
Issuance of common stock from exercise of stock options | 8,894 |  | 11,136 |  |  | 29,735 |  | 40,609 |
Issuance of common stock for employee stock purchase plan | 74,070 |  | 130,532 |  |  | 74,070 |  | 130,532 |
Repurchase of common stock | (181,250) |  | (1,419,984) |  |  | (925,251) |  | (2,167,401) |
Awards effectively repurchased for required employee withholding taxes | (49,391) |  | (67,491) |  |  | (117,619) |  | (118,617) |
Shares issued and outstanding, ending balance | 65,864,116 |  | 67,292,864 |  |  | 65,864,116 |  | 67,292,864 |

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