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Share-Based Compensation | 3 Months Ended
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Mar. 31, 2017
Share-Based Compensation [Abstract] |
Share-Based Compensation | (7) Share-Based Compensation ﻿ The Company’s share-based compensation plan is described, and informational disclosures are provided, in the Notes to Consolidated Financial Statements included in the Form 10-K for the year ended December 31, 2016. During the first three months of 2017 and 2016, the Company issued the following share-based instruments: (1) restricted stock units of 665,000 and 483,387 at weighted-average per share prices of $30.48 and $19.14, respectively; and (2) stock options of 265,000 and 274,000 at weighted-average per share exercise prices of $23.47 and $16.20, respectively. ﻿ Effective January 1, 2017, the Company prospectively adopted ASU 2016-09, Improvements to Employee Share-Based Payment Accounting (Topic 718), which simplifies several aspects of the accounting for share-based payment transactions, including the accounting for the income tax effect of share-based tran sactions and the forfeiture of share-based instruments. Upon this adoption, the Company elected an accounting policy requiring forfeitures of share-based instruments to be accounted for upon occurrence. As a result, the Company will recognize the full grant-date fair value of share-based awards throughout the requisite service and/or performance period, with any adjustments for forfeitures recognized only if and when a forfeiture occurs. In the first quarter of 2017, 20,985 performance-based restricted stock units, with a weighted-average per share price of $23.91, and 19,466 performance-based stock options, with a weighted-average per share exercise price of $2 6.56, were forfeited; however, t he impact of these forfeitures was not recognized in the first quarter of 2017 because it was previously recognized in the fourth quarter of 2016 in accordance with the provisions of ASC 718 before the adoption of ASU 2016-09.

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- Definition The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 40 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6418621&loc=d3e17540-113929 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=51659978&loc=d3e25284-112666 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5444-113901 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 + Details
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