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Note 9 - Stock-based Compensation (Tables) | 12 Months Ended
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Oct. 01, 2016
Notes Tables |
Schedule of Compensation Cost for Share-based Payment Arrangements, Allocation of Share-based Compensation Costs by Plan [Table Text Block] |
|  | Year Ended |
(In thousands) |  | October 1, 2016 |  |  | October 3, 2015 |  |  | September 27, 2014 |
Stock options: |  |  |  |  |  |  |  |  |  |  |  |
Compensation expense |  | $ | 988 |  |  | $ | 1,007 |  |  | $ | 1,139 |
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
|  | Year Ended |
|  | Octo ber 1 , 201 6 |  |  | Octo ber 3 , 201 5 |  |  | Septem ber 27 , 201 4 |
Expected term (in years) |  |  | 5.45 |  |  |  | 5.72 |  |  |  | 5.08 |
Risk-free interest rate |  |  | 1.30 | % |  |  | 2.18 | % |  |  | 0.38 | %
Expected volatility |  |  | 39.00 | % |  |  | 37.99 | % |  |  | 39.57 | %
Expected dividend yield |  |  | 0.48 | % |  |  | 0.61 | % |  |  | 0.60 | %
Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block] |
|  |  |  |  |  | Exercise Price |  |  | Contractual Term - |  |  | Aggregate |
|  |  |  |  |  | Per Share |  |  | Weighted |  |  | Intrinsic |
(Share amounts in thousands) |  | Options Outstanding |  |  | Range |  |  | Weighted Average |  |  | Average (in years) |  |  | Value (in thousands) |
Outstanding at September 28, 2013 |  |  | 918 |  |  |  | $5.43 |  |  |  | - |  |  |  | $20.27 |  |  | $ | 12.65 |  |  |  |  |  |  |  |  |
Granted |  |  | 136 |  |  |  | 19.08 |  |  |  | - |  |  |  | 20.50 |  |  |  | 19.80 |  |  |  |  |  |  |  |  |
Exercised |  |  | (183 | ) |  |  | 5.43 |  |  |  | - |  |  |  | 20.27 |  |  |  | 10.42 |  |  |  |  |  |  | $ | 1,789 |
Outstanding at September 27, 2014 |  |  | 871 |  |  |  | 6.89 |  |  |  | - |  |  |  | 20.50 |  |  |  | 14.23 |  |  |  |  |  |  |  |  |
Granted |  |  | 134 |  |  |  | 18.05 |  |  |  | - |  |  |  | 21.96 |  |  |  | 19.89 |  |  |  |  |  |  |  |  |
Exercised |  |  | (27 | ) |  |  | 6.89 |  |  |  | - |  |  |  | 11.15 |  |  |  | 9.17 |  |  |  |  |  |  |  | 328 |
Forfeited |  |  | (55 | ) |  |  | 9.16 |  |  |  | - |  |  |  | 21.96 |  |  |  | 15.37 |  |  |  |  |  |  |  |  |
Outstanding at October 3, 2015 |  |  | 923 |  |  |  | 7.55 |  |  |  | - |  |  |  | 21.96 |  |  |  | 15.14 |  |  |  |  |  |  |  |  |
Granted |  |  | 99 |  |  |  | 23.95 |  |  |  | - |  |  |  | 34.49 |  |  |  | 28.47 |  |  |  |  |  |  |  |  |
Exercised |  |  | (651 | ) |  |  | 7.55 |  |  |  | - |  |  |  | 21.96 |  |  |  | 13.93 |  |  |  |  |  |  |  | 8,718 |
Outstanding at October 1, 2016 |  |  | 371 |  |  |  | 9.16 |  |  |  | - |  |  |  | 34.49 |  |  |  | 20.81 |  |  |  | 7.98 |  |  |  | 5,722 |
Vested and anticipated to vest in future at October 1, 2016 |  |  | 365 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 20.78 |  |  |  | 7.96 |  |  |  | 5,647 |
Exercisable at October 1, 2016 |  |  | 142 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 16.41 |  |  |  | 6.56 |  |  |  | 2,826 |
Schedule of RSU Grants and Compensation Expense [Table Text Block] |
|  | Year Ended |
(In thousands) |  | October 1, 2016 |  |  | October 3, 2015 |  |  | September 27, 2014 |
Restricted stock unit grants: |  |  |  |  |  |  |  |  |  |  |  |
Units |  |  | 57 |  |  |  | 62 |  |  |  | 64 |
Market value |  | $ | 1,516 |  |  | $ | 1,253 |  |  | $ | 1,252 |
Compensation expense |  |  | 1,451 |  |  |  | 1,291 |  |  |  | 1,522 |
Schedule of Share-based Compensation, Restricted Stock and Restricted Stock Units Activity [Table Text Block] |
(Unit amounts in thousands) |  | Restricted Stock Units Outstanding |  |  | Weighted Average Grant Date Fair Value |
Balance, September 28, 2013 |  |  | 221 |  |  | $ | 13.20 |
Granted |  |  | 64 |  |  |  | 19.61 |
Released |  |  | (88 | ) |  |  | 12.33 |
Balance, September 27, 2014 |  |  | 197 |  |  |  | 15.68 |
Granted |  |  | 62 |  |  |  | 20.33 |
Forfeited |  |  | (13 | ) |  |  | 17.52 |
Released |  |  | (89 | ) |  |  | 12.86 |
Balance, October 3, 2015 |  |  | 157 |  |  |  | 18.96 |
Granted |  |  | 57 |  |  |  | 26.57 |
Forfeited |  |  | (2 | ) |  |  | 23.95 |
Released |  |  | (67 | ) |  |  | 17.95 |
Balance, October 1, 2016 |  |  | 145 |  |  |  | 22.35 |

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