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Stockholders' Equity and Stock Compensation Plans (Tables) | 12 Months Ended
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Oct. 01, 2017
Stockholders' Equity Note [Abstract] |
Schedule of the stock-based compensation and related income tax benefits | The stock-based compensation and related income tax benefits were as follows:
| Fiscal Year Ended
| October 1, 2017 |  | October 2, 2016 |  | September 27, 2015
| (in thousands)
Total stock-based compensation | $ | 13,450 |  |  | $ | 12,964 |  |  | $ | 10,926 |
Income tax benefit related to stock-based compensation | (4,715 | ) |  | (4,656 | ) |  | (3,811 | )
Stock-based compensation, net of tax benefit | $ | 8,735 |  |  | $ | 8,308 |  |  | $ | 7,115 |
Schedule of stock option activity | Stock option activity for the fiscal year ended October 1, 2017 was as follows:
| Number of Options (in thousands) |  | Weighted- Average Exercise Price per Share |  | Weighted- Average Remaining Contractual Term (in years) |  | Aggregate Intrinsic Value (in thousands)
Outstanding on October 2, 2016 | 2,367 |  |  | $ | 24.88 |  |  |  |  |  |
Granted | 183 |  |  | 40.67 |  |  |  |  |  |
Exercised | (791 | ) |  | 44.19 |  |  |  |  |  |
Forfeited | (6 | ) |  | 17.72 |  |  |  |  |  |
Outstanding at October 1, 2017 | 1,753 |  |  | 27.18 |  |  | 4.59 |  | $ | 33,963 |
Vested or expected to vest at October 1, 2017 | 1,696 |  |  | 27.31 |  |  | 4.50 |  | 32,640 |
Exercisable on October 1, 2017 | 1,242 |  |  | 25.10 |  |  | 3.43 |  | 26,636 |
Schedule of assumptions used in the calculation of the fair value of stock options using the Black-Scholes option pricing model | The fair value of our stock options was estimated on the date of grant using the Black-Scholes option pricing model. The following assumptions were used in the calculation:
| Fiscal Year Ended
| October 1, 2017 |  | October 2, 2016 |  | September 27, 2015
Dividend yield | 1.0% |  | 1.2% |  | 1.0%
Expected stock price volatility | 36.1% - 38.8% |  | 36.1% - 38.8% |  | 36.2% - 38.8%
Risk-free rate of return, annual | 1.7% - 1.9% |  | 1.6% - 1.8% |  | 1.5% - 1.7%
Schedule of restricted stock activity | Restricted stock activity for the fiscal year ended October 1, 2017 was as follows:
| Number of Shares (in thousands) |  | Weighted- Average Grant Date Fair Value
Nonvested balance at October 2, 2016 | 35 |  |  | $ | 28.58 |
Granted | 14 |  |  | 28.58 |
Vested | (49 | ) |  | 28.58 |
Forfeited | — |  |  | — |
Nonvested balance at October 1, 2017 | — |  |  | — |
Vested or expected to vest at October 1, 2017 | — |  |  | — |
Schedule of performance-based awards | PSU activity for the fiscal year ended October 1, 2017 was as follows:
| Number of Shares (in thousands) |  | Weighted- Average Grant Date Fair Value
Nonvested balance at October 2, 2016 | 277 |  |  | $ | 31.65 |
Granted | 99 |  |  | 48.36 |
Nonvested balance at October 1, 2017 | 376 |  |  | 36.05 |
Schedule of RSU activity | RSU activity for the fiscal year ended October 1, 2017 was as follows:
| Number of Shares (in thousands) |  | Weighted- Average Grant Date Fair Value
Nonvested balance at October 2, 2016 | 499 |  |  | $ | 27.16 |
Granted | 226 |  |  | 41.00 |
Vested | (186 | ) |  | 26.98 |
Forfeited | (28 | ) |  | 30.15 |
Nonvested balance at October 1, 2017 | 511 |  |  | 33.19 |
Summary of shares purchased, weighted-average purchase price, cash received, and the aggregate intrinsic value for shares purchased under the ESPP | The following table summarizes shares purchased, weighted-average purchase price, cash received and the aggregate intrinsic value for shares purchased under the ESPP:
| Fiscal Year Ended
| October 1, 2017 |  | October 2, 2016 |  | September 27, 2015
| (in thousands, except for purchase price)
Shares purchased | 190 |  |  | 209 |  |  | 243 |
Weighted-average purchase price | $ | 26.02 |  |  | $ | 22.54 |  |  | $ | 21.44 |
Cash received from exercise of purchase rights | $ | 4,940 |  |  | $ | 4,707 |  |  | $ | 5,204 |
Aggregate intrinsic value | $ | — |  |  | $ | 710 |  |  | $ | 1,277 |
Schedule of the assumptions used in the Black-Scholes option pricing model in estimating the grant date fair value of each award granted under the ESPP | The grant date fair value of each award granted under the ESPP was estimated using the Black-Scholes option pricing model with the following assumptions:
| Fiscal Year Ended
| October 1, 2017 |  | October 2, 2016 |  | September 27, 2015
Dividend yield | 1.0% |  | 1.3% |  | 1.1%
Expected stock price volatility | 22.4% |  | 23.7% |  | 23.7%
Risk-free rate of return, annual | 0.9% |  | 0.2% |  | 0.2%
Expected life (in years) | 1 |  | 1 |  | 1

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