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Share-Based Compensation | 9 Months Ended
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Sep. 30, 2017
Share-Based Compensation [Abstract] |
Share-Based Compensation | (9) Share-Based Compensation ﻿ On April 3, 2017, the Company adopted the Tutor Perini Corporation Incentive Compensation Plan (“Compensation Plan”), which was approved by the Company’s shareholders on May 24, 2017. The Compensation Plan provides for various types of share-based grants, including restricted and unrestricted stock units and stock options. Restricted and unrestricted stock units give the holder the right to exchange their stock units for shares of the Company’s common stock on a one-for-one basis. Stock options give the holder the right to purchase shares of the Company’s common stock at an exercise price equal to the fair value of the Company’s common stock on the date of the stock option’s award. Restricted stock units and stock options are usually subject to certain service and performance conditions and may not be sold or otherwise transferred until those restrictions have been satisfied; however, unrestricted stock units have no such restrictions. The term for stock options is limited to 10 years from the date of grant. The Compensation Plan allows for 2,335,000 shares of the Company’s common stock to be issued. As of September 30, 2017, there were 1,839,364 shares available to be granted under this plan. ﻿ The Company’s Amended and Restated Tutor Perini Corporation Long-Term Incentive Plan (“Incentive Plan”) is still active. The Incentive 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. As of September 30, 2017, there were 405,529 shares authorized to be issued under the Incentive Plan; however, as discussed in the Company’s Definitive Proxy Statement (Schedule 14A) filed on April 13, 2017, the Company will not issue these shares. As of September 30, 2017, the Incentive Plan had an aggregate of 4,360,018 of restricted stock units and stock options from outstanding, historical awards that either have not vested or have vested but have not been exercised. ﻿ During the first nine months of 2017 and 2016, the Company issued, in total from both the Compensation Plan and the Incentive Plan, the following share-based instruments: (1) restricted stock units of 1,055,000 and 483,387 at weighted-average per share prices of $30.03 and $19.14, respectively; (2) stock options of 530,000 and 274,000 at weighted-average per share exercise prices of $24.64 and $16.20, respectively; (3) unrestricted stock units of 99,155 and 64,603 at weighted-average per share prices of $26.26 and $21.67, 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 transactions 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 period, with any adjustments for forfeitures recognized only if and when a forfeiture occurs. This policy notwithstanding, the Company will continue to assess the probability that performance targets will be achieved, and will adjust share-based compensation expense accordingly. During the nine months ended September 30, 2017, a total of 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 $26.56, were forfeited; however, the impact of these forfeitures was not recognized during this period because it was previously recognized in the fourth quarter of 2016 in accordance w ith the provisions of ASC 718, Compensation-Stock Compensation. ﻿

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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=65895303&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=68057994&loc=d3e25284-112666 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 4: 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 5: 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 6: 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 + Details
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