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Stock-Based Compensation | 12 Months Ended
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Dec. 29, 2017
Share-based Compensation [Abstract] |
Stock-Based Compensation | Note 8: Stock-Based Compensation On May 29, 2008, the Company’s stockholders approved the 2008 Equity Incentive Plan and the 2008 Employee Stock Purchase Plan (“ESPP”). The 2008 Equity Incentive Plan and ESPP were previously adopted by the Company’s Board of Directors on April 8, 2008, subject to stockholder approval. The 2008 Equity Incentive Plan allows for the award of stock options, stock awards (including stock units, stock grants and stock appreciation rights or other similar equity awards) and cash awards to officers, employees, consultants and non-employee members of the Board of Directors. The total number of shares reserved for issuance under the 2008 Equity Incentive Plan was 5,928,150 shares of common stock, subject to adjustment resulting from a stock split or the payment of a stock dividend or any other increase or decrease in the number of issued shares of the Company’s stock effected without receipt of consideration by the Company. As of December 29, 2017, 1,495,437 shares were available for grant under the 2008 Equity Incentive Plan. The ESPP allows for officers and employees to purchase common stock through payroll deductions of up to 15% of a participant’s eligible compensation. Shares of common stock are purchased under the ESPP at 95% of the fair market value of the Company’s common stock on each purchase date. Subject to adjustment resulting from a stock split or the payment of a stock dividend or any other increase or decrease in the number of issued shares of the Company’s stock effected without receipt of consideration by the Company, the total number of shares reserved for issuance under the ESPP was 600,000 shares of common stock. As of December 29, 2017, 223,429 shares were available for grant. Weighted average purchase prices for shares sold under the ESPP plan in fiscal 2017, 2016 and 2015 were $61.33, $51.97 and $43.88, respectively. Restricted Stock Units The Company grants restricted stock units to employees and outside directors. These restricted stock unit grants are designed to attract and retain employees, and to better align employee interests with those of the Company’s stockholders. For a select group of employees, up to 40% of their annual bonus is settled with fully vested restricted stock unit awards. Under these fully vested restricted stock unit awards, the holder of each award has the right to receive one share of the Company’s common stock for each fully vested restricted stock unit four years from the date of grant. Each individual who received a fully vested restricted stock unit award is granted a matching number of unvested restricted stock unit awards. These unvested restricted stock unit awards cliff vest four years from the date of grant, at which time the holder of each award will have the right to receive one share of the Company’s common stock for each restricted stock unit award, provided the holder of each award has met certain employment conditions. In the case of retirement at 59 ½ years or older, all unvested restricted stock unit awards will continue to vest provided the holder of each award does all consulting work through the Company and does not become an employee for a past or present client, beneficial party or competitor of the Company. All restricted stock units granted have dividend equivalent rights (“DER”), which entitle holders of restricted stock units to the same dividend value per share as holders of common stock. DER are subject to the same vesting and other terms and conditions as the corresponding unvested RSUs. DER are accumulated and paid when the underlying shares vest and are forfeited if the underlying shares are forfeited. The value of these restricted stock unit awards is determined based on the market price of the Company’s common stock on the date of grant. The value of fully vested restricted stock unit awards issued is recorded as a reduction to accrued bonuses. The portion of bonus expense that the Company expects to settle with fully vested restricted stock unit awards is recorded as stock-based compensation during the period the bonus is earned. For fiscal years 2017, 2016 and 2015, the Company recorded stock-based compensation expense associated with accrued bonus awards of $8,331,000, $6,181,000 and $6,341,000, respectively. The Company recorded stock-based compensation expense associated with the unvested restricted stock unit awards of $7,075,000, $6,583,000 and $6,066,000 during fiscal years 2017, 2016 and 2015, respectively. The total fair value of restricted stock unit awards vested during fiscal years 2017, 2016 and 2015 was $21.3 million, $18.5 million and $18.6 million, respectively. The weighted-average grant date fair values of restricted stock unit awards granted during fiscal years 2017, 2016 and 2015 were $59.00, $48.29 and $43.76, respectively. The number of unvested restricted stock unit awards outstanding as of December 29, 2017 is as follows (1):
|  |  |  |  |  |  |  | Weighted-average |  |  |  |
|  | Number |  | Weighted-average |  | remaining |  | Aggregate |
|  | of awards |  | grant date |  | contractual |  | intrinsic value |
|  | outstanding |  | fair value |  | term (years) |  | (in thousands) (2) |
Balance as of December 30, 2016 |  |  | 695,314 |  | $ | 37.82 |  |  |  |  |  |  |
Awards granted |  |  | 262,212 |  |  | 59.00 |  |  |  |  |  |  |
Awards vested |  |  | (359,174) |  |  | 39.77 |  |  |  |  |  |  |
Awards forfeited |  |  | (5,760) |  |  | 46.97 |  |  |  |  |  |  |
Balance as of December 29, 2017 |  |  | 592,592 |  | $ | 45.91 |  |  | 1.6 |  | $ | 42,133 |
(1) | Does not include employee stock purchase plans or stock option plans.
| (2) | The intrinsic value is calculated as the market value as of the end of the fiscal period. As reported by the NASDAQ Global Select Market, the market value as of December 29, 2017 was $71.10.
Stock Options The Company currently grants stock options under the 2008 Equity Incentive Plan. Options are granted for terms of ten years and generally vest ratably over a four-year period from the grant date. The Company grants options at exercise prices equal to the fair value of the Company’s common stock on the date of grant. All stock options have dividend equivalent rights (“DER”), which entitle holders of stock options to the same dividend value per share as holders of common stock. DER are subject to the same vesting terms as the corresponding stock options. DER are accumulated and paid in cash when the underlying stock options vest and are forfeited if the underlying stock options do not vest. During fiscal years 2017, 2016 and 2015, the Company recorded stock-based compensation expense of $749,000, $569,000 and $552,000, respectively, associated with stock options. Option activity is as follows (1):
|  |  |  |  |  |  |  | Weighted-average |  |  |
|  | Number |  | Weighted-average |  | remaining |  | Aggregate |
|  | of shares |  | exercise |  | contractual |  | intrinsic value |
|  | outstanding |  | price |  | term (years) |  | (in thousands) |
Balance as of December 30, 2016 |  |  | 319,000 |  | $ | 31.58 |  |  |  |  |  |  |
Options granted |  |  | 56,000 |  |  | 58.10 |  |  |  |  |  |  |
Options forfeited and expired |  |  | - |  |  | - |  |  |  |  |  |  |
Options exercised |  |  | (35,000) |  |  | 23.38 |  |  |  |  |  |  |
Balance as of December 29, 2017 |  |  | 340,000 |  | $ | 36.79 |  |  | 6.23 |  | $ | 11,665 |
Exercisable at December 29, 2017 |  |  | 204,750 |  | $ | 27.55 |  |  | 4.88 |  | $ | 8,917 |
(1) Does not include restricted stock or employee stock purchase plans. The total intrinsic value of options exercised during fiscal years 2017, 2016 and 2015 was $1,461,000, $999,000 and $5,524,000, respectively. The aggregate intrinsic value in the table above represents the total pre-tax intrinsic value (the difference between the Company’s closing stock price on the last trading day of the fiscal year ended December 29, 2017, and the exercise price, multiplied by the number of in-the-money options) that would have been received by the option holders had all option holders exercised their options on December 29, 2017. This amount changes based on the fair-value of the Company’s stock. The Company uses the Black-Scholes option-pricing model to determine the fair value of options granted. The determination of the fair value of stock-based payment awards on the date of grant using an option-pricing model is affected by the Company’s stock price as well as assumptions regarding a number of complex and subjective variables. These variables include expected stock price volatility over the term of the award, actual and projected employee stock option exercise behaviors, the risk-free interest rate and expected dividends. The Company used historical exercise and post-vesting forfeiture and expiration data to estimate the expected term of options granted. The historical volatility of the Company’s common stock over a period of time equal to the expected term of the options granted was used to estimate expected volatility. The risk-free interest rate used in the option-pricing model was based on United States Treasury zero coupon issues with remaining terms similar to the expected term on the options. The dividend yield assumption considers the expectation of continued declaration of dividends, offset by option holders’ dividend equivalent rights. All share-based payment awards are recognized on a straight-line basis over the requisite service periods of the awards. The assumptions used to value option grants for fiscal years 2017, 2016 and 2015 are as follows:
|  | Stock Option Plan |
|  | 2017 |  | 2016 |  | 2015 |
Expected term (in years) |  |  | 5.9 |  |  | 6.0 |  |  | 6.1 |
Risk-free interest rate |  |  | 2.11 | % |  | 1.28 | % |  | 1.69 | %
Volatility |  |  | 24 | % |  | 25 | % |  | 27 | %
Dividend yield |  |  | 0 | % |  | 0 | % |  | 0 | %
The weighted-average grant date fair value of options granted during fiscal years 2017, 2016 and 2015 were $16.18, $13.08 and $13.30, respectively. The amount of stock-based compensation expense and the related income tax benefit recognized in the Company’s consolidated statements of income for fiscal years 2017, 2016 and 2015 is as follows:
|  | 2017 |  | 2016 |  | 2015 |
(In thousands) |  |  |  |  |  |  |  |  |  |
Compensation and related expenses: |  |  |  |  |  |  |  |  |  |
Restricted stock units |  | $ | 14,809 |  | $ | 12,225 |  | $ | 11,907 |
Stock option grants |  |  | 749 |  |  | 569 |  |  | 552 |
Sub-total |  |  | 15,558 |  |  | 12,794 |  |  | 12,459 |
General and administrative expenses: |  |  |  |  |  |  |  |  |  |
Restricted stock units |  |  | 597 |  |  | 539 |  |  | 500 |
Sub-total |  |  | 597 |  |  | 539 |  |  | 500 |
Total stock-based compensation expense |  | $ | 16,155 |  | $ | 13,333 |  | $ | 12,959 |
Income tax benefit |  | $ | 6,331 |  | $ | 5,214 |  | $ | 5,068 |
As of December 29, 2017, there was $7,570,000 of unrecognized compensation cost, expected to be recognized over a weighted average period of 2.4 years, related to unvested restricted stock unit awards and $790,000 of unrecognized compensation cost, expected to be recognized over a weighted average period of 2.7 years, related to unvested stock options.

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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 -URI http://asc.fasb.org/topic&trid=2228938 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -URI http://asc.fasb.org/subtopic&trid=2208855 + Details
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