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Share-Based Payment Awards (Tables) | 3 Months Ended
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Mar. 31, 2020
Share-based Payment Arrangement [Abstract] |
Schedule of Stock Option Activity | The following table summarizes the Company's stock option activity for the three months ended March 31, 2020 (in thousands, except weighted-average exercise price and weighted-average contractual life):
| 2012 Plan Stock Options |  | Weighted- Average Exercise Price |  | Weighted- Average Contractual Life |  | Aggregate Intrinsic Value
Outstanding, January 1, 2020 | 352.2 |  | $ | 13.95 |  |  |  |  |  |
Exercised | (7.3) |  | $ | 11.38 |  |  |  |  |  |
Outstanding, March 31, 2020 | 344.9 |  | $ | 14.00 |  |  | 1.3 years |  | $ | — |
Vested or expected to vest | 344.9 |  | $ | 14.00 |  |  | 1.3 years |  | $ | — |
Exercisable, March 31, 2020 | 344.9 |  | $ | 14.00 |  |  | 1.3 years |  | $ | — |
Summary of Non-vested Restricted Stock Unit Activity | The following table summarizes non-vested restricted stock unit activity for the three months ended March 31, 2020 (in thousands, except weighted-average grant-date fair value amounts):
|  | 2012 Plan Restricted Stock Units |  | Weighted- Average Grant-date Fair Value
Outstanding, January 1, 2020 |  | 454.7 |  | $ | 23.88 |
Granted |  | 225.7 |  | $ | 24.59 |
Vested |  | (88.2) |  | $ | 25.92 |
Canceled |  | (43.3) |  | $ | 26.60 |
Outstanding, March 31, 2020 |  | 548.9 |  | $ | 23.63 |
Schedule of Fair Value Assumptions of Market-based Awards | The fair value of the Company's market-based awards is estimated using the Company's stock price on the date of grant and the probability of vesting using a Monte Carlo simulation with the following weighted-average assumptions:
|  | Three Months Ended March 31, |  |
|  | 2020 Grants |  | 2019 Grants
Volatility of A&B common stock |  | 22.6 | % |  | 23.6 | %
Average volatility of peer companies |  | 23.2 | % |  | 24.3 | %
Risk-free interest rate |  | 1.3 | % |  | 2.6 | %
Summary of Compensation Cost related to Share-based Payments | The Company recognizes compensation cost net of actual forfeitures of time-based or market-based awards. A summary of compensation cost related to share-based payments is as follows (in millions):
|  | Three Months Ended March 31, |  |  |  |  |  |
|  | 2020 |  | 2019 |  |  |  |
Share-based expense: |  |  |  |  |  |  |  |
Time-based and market-based restricted stock units |  | $ | 1.5 |  |  | $ | 1.4 |  |  |  |  |

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- Definition Tabular disclosure of the amount of total share-based compensation cost, including the amounts attributable to each share-based compensation plan and any related tax benefits. Also includes disclosures of other measures related to share-based payments, including, but not limited to, cash proceeds received from the exercise of stock options and similar instruments granted under share-based payment arrangements and the intrinsic value of stock options exercised during the period. + References No definition available. + Details
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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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