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Repurchases Of Common Stock | 3 Months Ended
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Mar. 31, 2018
Repurchases Of Common Stock [Abstract] |
Repurchases Of Common Stock | N ote 1 0. 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 months ended March 31, 201 8 and 201 7 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 for the three months ended March 31, 201 8 and 201 7 (in thousands, except per share amounts): ﻿
﻿ |  |  |  |  |  |
﻿ |  | For the Three Months Ended
﻿ |  | March 31,
﻿ |  | 2018 |  | 2017
﻿ |  |  |  |  |  |
﻿Shares repurchased in the open market |  |  | 465 |  |  | 390
﻿Shares acquired through employee surrender for statutory tax withholding |  |  | 48 |  |  | 52
﻿Total shares repurchased |  |  | 513 |  |  | 442
﻿ |  |  |  |  |  |
﻿Cost of shares repurchased in the open market |  | $ | 86,188 |  | $ | 50,744
﻿Cost of shares for employee surrenders |  |  | 8,555 |  |  | 7,303
﻿Total cost of shares |  | $ | 94,743 |  | $ | 58,047
﻿ |  |  |  |  |  |
﻿Average cost per share - open market repurchase |  | $ | 185.23 |  | $ | 130.12
﻿Average cost per share - employee surrenders |  | $ | 178.83 |  | $ | 141.09
﻿Average cost per share - total |  | $ | 184.63 |  | $ | 131.41
﻿

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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -URI http://asc.fasb.org/subtopic&trid=2208821 + Details
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