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STOCK-BASED COMPENSATION PLANS | 3 Months Ended
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Nov. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Stock-based compensation plans | NOTE 12. STOCK-BASED COMPENSATION PLANS The Company's stock-based compensation plans are described, and informational disclosures provided, in Note 16, Stock-Based Compensation Plans, to the audited consolidated financial statements in the Company's Annual Report on Form 10-K for the fiscal year ended August 31, 2016. During the three months ended November 30, 2016 and 2015, restricted stock units and performance stock units accounted for under the equity method totaling 0.9 million and 1.5 million, respectively, were granted at a weighted-average fair value of $15.77 and $16.02, respectively. Additionally, during the three months ended November 30, 2016 and 2015, the Company granted 872,739 and 430,376 equivalent shares, respectively, of performance stock units and restricted stock units accounted for under the liability method. During the three months ended November 30, 2016, certain restricted stock units and performance stock units that were previously accounted for under the equity method were modified to allow optionality related to the net share settlement feature, which resulted in these awards now being accounted for under the liability method. The fair value of liability awards is remeasured each reporting period and is recognized ratably over the service period. The Company incurred expenses of $3.9 million as a result of the modification and increased stock value at November 30, 2016 compared to no material adjustments for the three months ended November 30, 2015. As of November 30, 2016, the Company had 2,115,788 equivalent shares accounted for under the liability method outstanding. The Company expects 2,016,444 equivalent shares to vest. In general, the restricted stock units granted during fiscal 2017, 2016, and 2015 vest ratably over a period of three years. However, certain restricted stock units granted during fiscal 2017 and 2015 cliff vest after a period of three years. Additionally, certain restricted stock units granted during fiscal 2015 vest after a specified service period during which one-third of each such award vests on the second anniversary of the grant date, and the remaining two-thirds of each such award vests on the third anniversary of the grant date. For certain restricted stock units granted during fiscal 2014, 25% vests on the second anniversary of the grant date; 25% vests on the third anniversary of the grant date and the remaining 50% vests on the fourth anniversary of the grant date. Subject to the achievement of performance targets established by the Compensation Committee of CMC's Board of Directors, the performance stock units granted during fiscal 2017, 2016, and 2015 will vest after a period of three years. Total stock-based compensation expense, including fair value remeasurements, for the three months ended November 30, 2016 and 2015 of $8.2 million and $6.3 million, respectively, was included in selling, general and administrative expenses on the Company's condensed consolidated statements of earnings.

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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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