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Earnings per Share | 3 Months Ended
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Mar. 31, 2018
Earnings per Share [Abstract] |
Earnings per Share | Note J – Earnings per Share Net income was used as the numerator in computing both basic and diluted income per Common share for the three-month periods ended March 31, 2018 and 2017. The following table reconciles the weighted-average shares outstanding used for these computations. ﻿
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﻿ | Three Months Ended
﻿ | March 31,
﻿(Weighted-average shares) | 2018 |  | 2017
﻿Basic method | 172,805,065 |  | 172,422,449
﻿Dilutive stock options and restricted stock units | 1,814,459 |  | 666,242
﻿ Diluted method | 174,619,524 |  | 173,088,691
﻿ ﻿ The following table reflects certain options to purchase shares of common stock that were outstanding during the periods presented but were not included in the computation of diluted shares above because the incremental shares from assumed conversion were antidilutive.
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﻿ | Three Months Ended
﻿ |  | March 31,
﻿ |  | 2018 |  | 2017
﻿Antidilutive stock options excluded from diluted shares |  | 3,798,792 |  |  | 5,029,752
﻿Weighted average price of these options | $ | 50.77 |  | $ | 52.26
﻿ ﻿

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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