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Share-Based Compensation | 6 Months Ended
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Jun. 30, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Share-Based Compensation | Share-Based Compensation Stock Options Weighted average option fair values and assumptions for the periods specified are disclosed below. The fair value of each option grant was estimated on the date of the grant using the Binomial lattice option pricing model.
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2016 |  | 2015 |  | 2016 |  | 2015
Weighted average fair value of option grants | $20.60 |  | $19.49 |  | $18.41 |  | $20.39
Dividend yield | 1.63% |  | 1.65% |  | 1.70% |  | 1.42%
Volatility | 29.62% |  | 29.87% |  | 29.71% |  | 29.94%
Risk-free forward interest rate | 0.60% - 2.56% |  | 0.26% - 3.11% |  | 0.53% - 2.50% |  | 0.23% - 2.75%
Expected life (in years) | 5.91 |  | 5.90 |  | 5.91 |  | 5.90
Total compensation cost for stock options is as follows:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2016 |  | 2015 |  | 2016 |  | 2015
Cost of goods sold | $ | 143 |  |  | $ | 124 |  |  | $ | 262 |  |  | $ | 350 |
Selling, general and administrative expenses | 1,511 |  |  | 1,494 |  |  | 3,806 |  |  | 3,690 |
Total expense before income taxes | 1,654 |  |  | 1,618 |  |  | 4,068 |  |  | 4,040 |
Income tax benefit | (526 | ) |  | (502 | ) |  | (1,286 | ) |  | (1,269 | )
Total expense after income taxes | $ | 1,128 |  |  | $ | 1,116 |  |  | $ | 2,782 |  |  | $ | 2,771 |
A summary of the Company’s stock option activity as of June 30, 2016, and changes during the six months ended June 30, 2016, are presented in the following table:
Stock Options | Shares |  | Weighted Average Price |  | Weighted-Average Remaining Contractual Term |  | Aggregate Intrinsic Value
Outstanding at January 1, 2016 | 2,266,433 |  |  | $ | 54.05 |  |  | 6.58 |  | $ | 51,918,028 |
Granted | 549,815 |  |  | 74.80 |  |  |  |  |
Exercised | (393,142 | ) |  | 43.03 |  |  |  |  |
Forfeited | (64,874 | ) |  | 71.49 |  |  |  |  |
Outstanding at June 30, 2016 | 2,358,232 |  |  | $ | 60.25 |  |  | 7.12 |  | $ | 51,540,880 |
Vested and expected to vest as of June 30, 2016 | 2,204,293 |  |  | $ | 59.23 |  |  | 6.98 |  | $ | 50,424,569 |
Exercisable at June 30, 2016 | 1,211,400 |  |  | $ | 47.70 |  |  | 5.52 |  | $ | 41,674,285 |
Restricted Stock Restricted stock awards generally cliff vest after three years for employees and non-employee directors. Unvested restricted stock carries dividend and voting rights and the sale of the shares is restricted prior to the date of vesting. A summary of the Company’s restricted stock activity as of June 30, 2016, and changes during the six months ended June 30, 2016, are presented as follows:
Restricted Stock | Shares |  | Weighted-Average Grant Date Fair Value
Unvested at January 1, 2016 | 272,755 |  |  | $ | 65.90 |
Granted | 60,120 |  |  | 75.01 |
Vested | (100,972 | ) |  | 51.41 |
Forfeited | (13,420 | ) |  | 73.83 |
Unvested at June 30, 2016 | 218,483 |  |  | $ | 74.61 |
Dividends are paid on restricted stock awards and whose fair value is equal to the market price of the Company’s stock at the date of the grant. Total compensation cost for restricted shares is as follows:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2016 |  | 2015 |  | 2016 |  | 2015
Cost of goods sold | $ | 133 |  |  | $ | 94 |  |  | $ | 261 |  |  | $ | 255 |
Selling, general and administrative expenses | 968 |  |  | 1,256 |  |  | 2,498 |  |  | 3,513 |
Total expense before income taxes | 1,101 |  |  | 1,350 |  |  | 2,759 |  |  | 3,768 |
Income tax benefit | (324 | ) |  | (365 | ) |  | (837 | ) |  | (1,054 | )
Total expense after income taxes | $ | 777 |  |  | $ | 985 |  |  | $ | 1,922 |  |  | $ | 2,714 |
Cash-Settled Restricted Stock The Company also maintains a cash-settled share based compensation plan for certain employees. Cash-settled restricted stock awards generally cliff vest after three years. A summary of the Company’s unvested cash-settled restricted stock activity as of June 30, 2016, and changes during the six months ended June 30, 2016, are presented in the following table:
Cash-Settled Restricted Stock | Shares |  | Weighted-Average Fair Value
Unvested at January 1, 2016 | 110,860 |  |  | $ | 76.61 |
Granted | 39,450 |  |  | 82.10 |
Vested | (35,750 | ) |  | 72.41 |
Forfeited | (7,340 | ) |  | 82.10 |
Unvested at June 30, 2016 | 107,220 |  |  | $ | 82.10 |
Dividend equivalents are paid on certain cash-settled restricted stock awards. Total compensation cost for cash-settled restricted stock is as follows:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2016 |  | 2015 |  | 2016 |  | 2015
Cost of goods sold | $ | 131 |  |  | $ | 226 |  |  | $ | 320 |  |  | $ | 544 |
Selling, general and administrative expenses | 461 |  |  | 485 |  |  | 961 |  |  | 925 |
Total expense before income taxes | 592 |  |  | 711 |  |  | 1,281 |  |  | 1,469 |
Income tax benefit | (86 | ) |  | (107 | ) |  | (184 | ) |  | (224 | )
Total expense after income taxes | $ | 506 |  |  | $ | 604 |  |  | $ | 1,097 |  |  | $ | 1,245 |
Performance Share Units Weighted average performance share unit fair values and assumptions for the period specified are disclosed below. The performance share units are market condition awards and have been assessed at fair value on the date of grant using a Monte Carlo simulation model.
|  | Three and Six Months Ended June 30,
|  | 2016 |  | 2015
Weighted average fair value of performance share units |  | $111.42 |  | $95.07
Dividend yield |  | —% |  | —%
Volatility |  | 17.99% |  | 19.14%
Risk-free forward interest rate |  | 0.89% |  | 1.01%
Expected life (in years) |  | 2.86 |  | 2.86
A summary of the Company’s performance share unit activity as of June 30, 2016, and changes during the six months ended June 30, 2016, are presented in the following table:
Performance Share Units | Shares |  | Weighted-Average Grant Date Fair Value
Unvested at January 1, 2016 | 146,275 |  |  | $ | 94.80 |
Granted | 85,130 |  |  | 111.42 |
Vested | — |  |  | — |
Forfeited | (1,065 | ) |  | 94.74 |
Unvested at June 30, 2016 | 230,340 |  |  | $ | 100.95 |
Performance share units that vested on December 31, 2015 resulted in 87,600 shares issued in February 2016. Total compensation cost for performance share units is as follows:
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2016 |  | 2015 |  | 2016 |  | 2015
Cost of goods sold | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Selling, general and administrative expenses | 1,815 |  |  | 1,183 |  |  | 3,496 |  |  | 2,525 |
Total expense before income taxes | 1,815 |  |  | 1,183 |  |  | 3,496 |  |  | 2,525 |
Income tax benefit | (633 | ) |  | (408 | ) |  | (1,168 | ) |  | (838 | )
Total expense after income taxes | $ | 1,182 |  |  | $ | 775 |  |  | $ | 2,328 |  |  | $ | 1,687 |
The Company’s policy is to recognize compensation cost on a straight-line basis, assuming forfeitures, over the requisite service period for the entire award. Classification of stock compensation cost within the Consolidated Statements of Operations is consistent with classification of cash compensation for the same employees. As of June 30, 2016, there was $14.3 million of total unrecognized compensation cost related to stock options that is expected to be recognized over a weighted-average period of 1.5 years, $10.4 million of total unrecognized compensation cost related to restricted stock that is expected to be recognized over a weighted-average period of 1.1 years, and $10.1 million of total unrecognized compensation cost related to performance share units that is expected to be recognized over a weighted-average period of 1.1 years.

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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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