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Share-Based Awards | 12 Months Ended
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Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Share-Based Awards | Share-Based Awards The Company has a share-based compensation plan which was approved by its Shareholders in April 2014 (Plan) under which the Board of Directors may grant to employees share-based awards including nonqualified stock options, stock appreciation rights (SARs), shares of restricted stock, restricted stock units (RSUs) and performance restricted stock units (PRSUs). PRSUs include a three-year performance period with vesting based 42.5% on achievement of net income targets, 42.5% on achievement of return on invested capital targets and 15.0% on achievement of new rider targets. Shares of restricted stock and RSUs granted under the Plan vest ratably over a three-year period with the first one-third of the grant vesting one year after the date of grant. Dividends are paid on shares of restricted stock, RSUs settled with stock and PRSUs settled with stock. Dividend equivalents are paid on RSUs and PRSUs settled with cash. The options and SARs granted under the Plan have an exercise price equal to the fair market value of the underlying stock at the date of grant and vest ratably over a three-year period with the first one-third of the grant becoming exercisable one year after the date of grant. The options and SARs expire 10 years from the date of grant. At December 31, 2016, there were 11.7 million shares of common stock available for future awards under the Plan. Restricted Stock and Performance Restricted Stock Awards Settled in Stock: Beginning in 2016, the Company granted certain eligible U.S. employees PRSUs that settle in Company stock. Beginning in 2014, the Company granted certain eligible U.S. employees RSUs that settle in Company stock. Prior to 2014, the Company granted restricted, nonvested stock. The fair value of RSUs and PRSUs settled in stock and restricted stock is determined based on the market price of the Company’s shares on the grant date. There were no outstanding restricted stock awards at December 31, 2016. The following table summarizes the RSUs and PRSUs settled in stock and restricted stock transactions for the year ended December 31, 2016 (in thousands except for per share amounts):
|  | Shares / Units |  | Grant Date Fair Value Per Share
Nonvested, beginning of period |  | 850 |  |  | $ | 59 |
Granted |  | 1,054 |  |  | $ | 41 |
Vested |  | (389 | ) |  | $ | 59 |
Forfeited |  | (144 | ) |  | $ | 49 |
Nonvested, end of period |  | 1,371 |  |  | $ | 46 |
As of December 31, 2016, there was $23.7 million of unrecognized compensation cost related to RSUs and PRSUs settled in stock that is expected to be recognized over a weighted-average period of 1.9 years. Restricted Stock Awards Settled in Cash: Restricted stock units (RSUIs) and performance restricted stock units (PRSUIs) granted to certain eligible international employees vest under the same terms and conditions as RSUs and PRSUs settled in stock and restricted stock; however, they are settled in cash equal to their settlement date fair value. As a result, RSUIs and PRSUIs are recorded in the Company’s consolidated balance sheets as a liability until the date of vesting. The fair value of RSUIs and PRSUIs is determined based on the market price of the Company’s shares on the grant date. The following table summarizes the RSUI and PRSUI transactions for the year ended December 31, 2016 (in thousands except for per share amounts):
|  | Units |  | Weighted-Average Grant Date Fair Value Per Share
Nonvested, beginning of period |  | 109 |  |  | $ | 52 |
Granted |  | 94 |  |  | $ | 58 |
Vested |  | (55 | ) |  | $ | 52 |
Forfeited |  | (24 | ) |  | $ | 56 |
Nonvested, end of period |  | 124 |  |  | $ | 56 |
Stock Options: There were no stock options granted in 2016. In 2015 and 2014, the Company estimated the grant date fair value of its option awards granted using a lattice-based option valuation model. The Company believes that the lattice-based option valuation model provides a more precise estimate of fair value than the Black-Scholes option pricing model. Lattice-based option valuation models utilize ranges of assumptions over the expected term of the options. The Company used implied volatility to determine the expected volatility of its stock. The Company used historical data to estimate option exercise and employee termination within the valuation model. The expected term of options granted was derived from the output of the option valuation model and represents the average period of time that options granted are expected to be outstanding. The risk-free rate for periods within the contractual life of the option is based on the U.S. Treasury yield curve in effect at the time of grant. There were no stock options granted in 2016. Assumptions used in calculating the lattice-based fair value of options granted during 2015 and 2014 were as follows:
|  | 2015 |  | 2014
Expected average term (in years) |  | 6.0 |  |  | 6.1 |
Expected volatility |  | 24% - 30% |  |  | 25% - 34% |
Weighted average volatility |  | 28 | % |  | 32 | %
Expected dividend yield |  | 2.0 | % |  | 1.8 | %
Risk-free interest rate |  | 0.1% - 2.0% |  |  | 0.1% - 2.8% |
The following table summarizes the stock option transactions for the year ended December 31, 2016 (in thousands except for per share amounts):
|  | Options |  | Weighted- Average Price
Options outstanding, beginning of period |  | 2,503 |  |  | $ | 47 |
Options exercised |  | (468 | ) |  | $ | 34 |
Options forfeited |  | (157 | ) |  | $ | 58 |
Options outstanding, end of period |  | 1,878 |  |  | $ | 49 |
Exercisable, end of period |  | 1,599 |  |  | $ | 46 |
The weighted-average fair value of options granted during the years ended December 31, 2015 and 2014 was $13 and $14, respectively. As of December 31, 2016, there was $1.0 million of unrecognized compensation cost related to stock options that is expected to be recognized over a weighted-average period of 1.0 year. The following table summarizes the aggregate intrinsic value related to options outstanding, exercisable and exercised as of and for the years ended December 31 (in thousands):
|  | 2016 |  | 2015 |  | 2014
Exercised |  | $ | 9,595 |  |  | $ | 9,890 |  |  | $ | 31,623 |
Outstanding |  | $ | 22,383 |  |  | $ | 16,605 |  |  | $ | 61,947 |
Exercisable |  | $ | 22,383 |  |  | $ | 16,605 |  |  | $ | 54,071 |
The Company’s policy is to issue new shares of common stock upon the exercise of employee stock options. Stock options outstanding at December 31, 2016 were as follows (options in thousands):
Price Range |  | Weighted-Average Contractual Life |  | Options |  | Weighted-Average Exercise Price
$10.01 to $20 |  | 2.2 |  | 199 |  |  | $ | 14 |
$20.01 to $30 |  | 3.1 |  | 155 |  |  | $ | 24 |
$30.01 to $40 |  | 1.1 |  | 112 |  |  | $ | 39 |
$40.01 to $50 |  | 4.5 |  | 272 |  |  | $ | 44 |
$50.01 to $60 |  | 4.2 |  | 313 |  |  | $ | 52 |
$60.01 to $70 |  | 5.1 |  | 827 |  |  | $ | 64 |
Options outstanding |  | 4.2 |  | 1,878 |  |  | $ | 49 |
Options exercisable |  | 3.5 |  | 1,599 |  |  | $ | 46 |
Stock Appreciation Rights (SARs): SARs vest under the same terms and conditions as options; however, they are settled in cash equal to their settlement date fair value. As a result, SARs are recorded in the Company’s consolidated balance sheets as a liability until the date of exercise. The fair value of each SAR award is estimated using a lattice-based valuation model. In accordance with ASC Topic 718, “Stock Compensation,” the fair value of each SAR award is recalculated at the end of each reporting period and the liability and expense adjusted based on the new fair value and the percent vested. No SARs were granted in 2016. The assumptions used to determine the fair value of the SAR awards at December 31, 2016 and 2015 were as follows:
|  | 2016 |  | 2015
Expected average term (in years) |  | 5.2 - 5.7 |  |  | 5.3 - 7.4 |
Expected volatility |  | 28% - 31% |  |  | 28% - 30% |
Expected dividend yield |  | 2.4 | % |  | 2.7 | %
Risk-free interest rate |  | 0.5% - 2.6% |  |  | 0.2% - 2.3% |
The following table summarizes the SAR transactions for the year ended December 31, 2016 (in thousands except for per share amounts):
|  | SARs |  | Weighted-Average Price
Outstanding, beginning of period |  | 162 |  |  | $ | 33 |
Exercised |  | (84 | ) |  | $ | 29 |
Forfeited |  | (3 | ) |  | $ | 63 |
Outstanding, end of period |  | 75 |  |  | $ | 37 |
Exercisable, end of period |  | 65 |  |  | $ | 34 |
The weighted-average fair value of SARs granted during the years ended December 31, 2015 and 2014 was $13 and $14, respectively.

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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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