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Repurchases Of Common Stock | 6 Months Ended
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Jun. 30, 2021
Equity [Abstract] |
Repurchases Of Common Stock | REPURCHASES OF COMMON STOCK We primarily acquire shares by repurchases in the open market. However, we also acquire shares that are surrendered by employees in payment for the minimum required statutory withholding taxes due on the vesting of restricted stock units and the settlement of deferred stock units, otherwise referred to herein as employee surrenders. We issue shares of treasury stock upon the vesting of certain restricted stock units and upon the exercise of certain stock options. The number of shares of treasury stock issued during the three and six months ended June 30, 2021 and 2020 was not material. The following is a summary of our open market common stock repurchases, reported on a trade date basis, and shares acquired through employee surrender:
(in thousands, except per share amounts) | For the Three Months Ended June 30, |  | For the Six Months Ended June 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
Shares repurchased in the open market | 341 |  |  | — |  |  | 618 |  |  | 721 |
Shares acquired through employee surrender for statutory tax withholding (1) | — |  |  | — |  |  | 28 |  |  | 30 |
Total shares repurchased | 341 |  |  | — |  |  | 646 |  |  | 751 |
Cost of shares repurchased in the open market | $ | 188,409 |  |  | $ | — |  |  | $ | 327,622 |  |  | $ | 179,623 |
Cost of shares for employee surrenders | 3 |  |  | 65 |  |  | 14,986 |  |  | 8,669 |
Total cost of shares | $ | 188,412 |  |  | $ | 65 |  |  | $ | 342,608 |  |  | $ | 188,292 |
Average cost per share - open market repurchases | $ | 552.08 |  |  | $ | — |  |  | $ | 529.45 |  |  | $ | 249.20 |
Average cost per share - employee surrenders | $ | 550.59 |  |  | $ | 312.19 |  |  | $ | 544.08 |  |  | $ | 288.94 |
Average cost per share - total | $ | 552.08 |  |  | $ | 312.19 |  |  | $ | 530.07 |  |  | $ | 250.79 |
(1) For the quarters ended June 30, 2021 and 2020, the number of shares acquired though employee surrender for statutory tax withholding were below rounding thresholds.

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- Definition The entire disclosure for treasury stock, including, but not limited to, average cost per share, description of share repurchase program, shares repurchased, shares held for each class of treasury stock. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -URI http://asc.fasb.org/subtopic&trid=2208821 + Details
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