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Stock-Based Compensation Plans | 12 Months Ended
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Dec. 31, 2015
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Stock-Based Compensation Plans | Stock-Based Compensation Plans The following table shows stock-based compensation expense included in the Consolidated Statements of Income:
| Years Ended December 31,
| 2015 |  | 2014 |  | 2013
Cost of equipment sales | $ | 998 |  |  | $ | 1,004 |  |  | $ | 886 |
Cost of software | 211 |  |  | 95 |  |  | — |
Cost of support services | 786 |  |  | 607 |  |  | 382 |
Cost of business services | 845 |  |  | 694 |  |  | 527 |
Selling, general and administrative | 16,460 |  |  | 14,028 |  |  | 11,099 |
Research and development | 1,749 |  |  | 1,018 |  |  | 435 |
Discontinued operations (1) | — |  |  | — |  |  | 1,592 |
Stock-based compensation expense | 21,049 |  |  | 17,446 |  |  | 14,921 |
Tax benefit | (8,083 | ) |  | (6,699 | ) |  | (5,759 | )
Stock-based compensation expense, net of tax | $ | 12,966 |  |  | $ | 10,747 |  |  | $ | 9,162 |
(1) Amount represents the expense related to the immediate vesting of restricted stock units and stock options held by employees of PBMS upon the sale of the business. Stock Plans We have a long-term incentive program whereby eligible employees may be granted restricted stock units, non-qualified stock options, other stock-based awards, cash or any combination thereof. The Executive Compensation Committee of the Board of Directors administers these plans. We settle employee stock compensation awards with treasury shares. At December 31, 2015, there were 20,092,604 shares available for future grants under our long-term incentive program. Restricted Stock Units Restricted stock units (RSUs) entitle the holder to shares of common stock as the units vest, typically over a three or four year service period. The following table summarizes information about restricted stock units during 2015 and 2014:
| 2015 |  | 2014
| Shares |  | Weighted average grant date fair value |  | Shares |  | Weighted average grant date fair value
Outstanding - beginning of the year | 1,819,239 |  |  | $ | 16.41 |  |  | 1,941,312 |  |  | $ | 13.19 |
Granted | 809,436 |  |  | 21.15 |  |  | 685,994 |  |  | 23.62 |
Vested | (802,284 | ) |  | 16.88 |  |  | (713,886 | ) |  | 14.50 |
Forfeited | (99,177 | ) |  | 17.93 |  |  | (94,181 | ) |  | 15.11 |
Outstanding - end of the year | 1,727,214 |  |  | $ | 18.30 |  |  | 1,819,239 |  |  | $ | 16.41 |
The fair value of RSUs is determined based on the stock price on the grant date less the present value of expected dividends. At December 31, 2015, there was $13 million of unrecognized compensation cost related to RSUs that is expected to be recognized over a weighted-average period of 1.6 years. The intrinsic value of RSUs outstanding at December 31, 2015 was $36 million. The intrinsic value of RSUs vested during 2015, 2014 and 2013 was $18 million, $18 million and $15 million, respectively. The fair value of RSUs vested during 2015, 2014 and 2013 was $14 million, $10 million and $18 million, respectively. During 2013, we granted 1,365,798 RSUs at a weighted average fair value of $10.37. Non-employee directors receive restricted stock units which are convertible into shares of common stock one year from date of grant. In 2015 and 2014, 12,824 and 34,344 restricted stock units were awarded to non-employee directors, respectively. Performance Stock Units The following table summarizes share information about Performance stock units (PSUs) during 2015:
| Years Ended December 31,
| 2015 |  | 2014
Outstanding - beginning of the year | 606,715 |  |  | — |
Granted | 725,330 |  |  | 493,255 |
Performance adjustments | (188,774 | ) |  | 113,460 |
Forfeited | (35,756 | ) |  | — |
Outstanding - end of the year | 1,107,515 |  |  | 606,715 |
PSUs are stock awards where the number of shares ultimately received by the employee is conditional upon the attainment of certain performance targets as well as total shareholder return relative to peer companies. PSUs vest at the end of a three-year service period and the actual number of shares awarded may range from 0% to 200% of the target award. However, the final determination of the number of shares to be issued is made by our Board of Directors, who may reduce, but not increase, the ultimate number of shares to be awarded (negative discretion). PSUs are accounted for as variable awards until the end of the service period when the grant date is established. Total share-based compensation expense for PSUs is determined by the product of the number of shares eligible to be awarded and expected to vest and the fair value of the award, determined using a Monte Carlo simulation model, commencing at the inception of the requisite service period. During the performance period, the compensation expense for PSUs is re-computed using the fair value of the award, determined using a Monte Carlo simulation model each balance sheet date. Due to the variability of these awards, significant fluctuations in share-based compensation expense recognized from one period to the next are possible. At December 31, 2015, there was $14 million of unrecognized compensation cost related to PSUs that will be recognized over 1.7 years. Stock Options Stock options may be granted to certain officers and employees at an exercise price equal to or greater than the stock price of our common stock on the grant date. Options vest ratably over three or four years and expire ten years from the date of grant. At December 31, 2015, there was less than $1 million of unrecognized compensation cost related to stock options that is expected to be recognized over a weighted-average period of 2.8 years. The intrinsic value of options outstanding and options exercisable at December 31, 2015 was $3 million and $2 million, respectively. No stock options were exercised in 2015. The intrinsic value of options exercised during 2014 was not material. The following table summarizes information about stock option activity during 2015 and 2014:
| 2015 |  | 2014
| Shares |  | Per share weighted average exercise prices |  | Shares |  | Per share weighted average exercise prices
Options outstanding - beginning of the year | 10,708,694 |  |  | $ | 34.27 |  |  | 12,396,894 |  |  | $ | 34.90 |
Granted | 200,000 |  |  | 24.79 |  |  | — |  |  | — |
Exercised | — |  |  | — |  |  | (137,072 | ) |  | 22.78 |
Canceled | (100,200 | ) |  | 31.59 |  |  | (114,925 | ) |  | 36.05 |
Expired | (2,036,894 | ) |  | 46.42 |  |  | (1,436,203 | ) |  | 40.06 |
Options outstanding - end of the year | 8,771,600 |  |  | $ | 31.26 |  |  | 10,708,694 |  |  | $ | 34.27 |
Options exercisable - end of the year | 8,054,932 |  |  | $ | 32.14 |  |  | 9,808,694 |  |  | $ | 35.60 |
The following table provides additional information about stock options outstanding and exercisable at December 31, 2015:
|  | Options Outstanding |  | Options Exercisable
Range of per share exercise prices |  | Shares |  | Per share weighted-average exercise price |  | Weighted-average remaining contractual life |  | Shares |  | Per share weighted-average exercise price |  | Weighted-average remaining contractual life
$13.39 - $22.99 |  | 2,290,103 |  |  | $ | 20.23 |  |  | 5.6 years |  | 1,880,102 |  |  | $ | 20.50 |  |  | 5.3 years
$23.00 - $30.99 |  | 2,538,566 |  |  | 25.26 |  |  | 4.7 years |  | 2,231,899 |  |  | 25.36 |  |  | 4.1 years
$31.00 - $45.99 |  | 3,311,665 |  |  | 40.30 |  |  | 1.2 years |  | 3,311,665 |  |  | 40.30 |  |  | 1.2 years
$46.00 - $48.03 |  | 631,266 |  |  | 48.03 |  |  | 1.1 years |  | 631,266 |  |  | 48.03 |  |  | 1.1 years
|  | 8,771,600 |  |  | $ | 31.26 |  |  | 3.4 years |  | 8,054,932 |  |  | $ | 32.14 |  |  | 2.9 years
We estimate the fair value of stock options using a Black-Scholes valuation model. Key assumptions used to estimate the fair value of stock options include the volatility of our stock price, a risk-free interest rate, the expected dividend yield and expected life of the award. The risk-free interest rate is based on U.S. treasuries with a term equal to the expected option term. The expected stock price volatility, life of the award and expected dividend yield are based on historical experience. In 2014 there were no stock options granted and in 2013, we granted 800,000 options at a weighted average exercise price of $21.93. The fair value of stock options granted during 2015 was determined using the following assumptions:
Expected dividend yield | 3.4 | %
Expected stock price volatility | 29.0 | %
Risk-free interest rate | 2.0 | %
Expected life | 7 years |
Weighted-average fair value per option granted | $3.38
Fair value of options granted (in thousands) | $676
Employee Stock Purchase Plan We maintain a non-compensatory Employee Stock Purchase Plan that enables substantially all U.S. and Canadian employees to purchase shares of our common stock at an offering price of 95% of the average market price on the offering date. At no time will the exercise price be less than the lowest price permitted under Section 423 of the Internal Revenue Code. Employees purchased 131,769 shares and 87,606 shares in 2015 and 2014, respectively. We have reserved 3,068,737 common shares for future purchase under the ESPP.

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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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