Disclosure of Compensation Related Costs, Share-based Payments [Text Block] | ( 6 Under our equity incentive plan, employees and directors may February 17, 2015, 2015 “2015 900,000 2015 February 17, 2025, 2005 February 15, 2015. March 30, 2019, 241,000 2015 Stock o ption awards . may three ten $383,000 $381,000 three March 30, 2019 March 31, 2018, $438,000 $471,000 six March 30, 2019 March 31, 2018, March 30, 2019, $272,000 1.66 The fair value of each option award granted is estimated on the date of grant using a Monte Carlo valuation model. The estimated fair values of stock options granted during the three six March 30, 2019 March 31, 2018 $7.96 $10.46 Six Months Ended March 30, March 31, 2019 2018 Risk-free interest rate 3.84 % 2.72 % Dividend yield 0.50 % 0.40 % Expected volatility 43.08 % 37.74 % Expected term (in years) 4.56 4.89 The assumptions utilized in the Monte Carlo valuation model are evaluated and revised, as necessary, to reflect market conditions and actual historical experience. The risk-free interest rate for periods within the contractual life of the option was based on the U.S. Treasury yield curve in effect at the time of the grant. The dividend yield was calculated based on our annual dividend as of the option grant date. The expected volatility was derived using a term structure based on historical volatility and the volatility implied by exchange-traded options on our common stock. The expected term for options was based on the results of a Monte Carlo simulation model, using the model’s estimated fair value as an input to the Black-Scholes-Merton model, and then solving for the expected term. The following table summarizes stock option activity: Contractual Aggregate Options Exercise Price Per Share Term - Weighted Intrinsic Outstanding Weighted Average Value (in thousands) Range Average (in years) (in thousands) Outstanding at September 29, 2018 264 $ 10.23 - $ 41.85 $ 29.25 Granted 58 21.57 - 21.57 21.57 Exercised (5 ) 18.05 - 26.75 23.95 $ 21 Outstanding at March 30, 2019 317 10.23 - 41.85 27.93 7.83 205 Vested and anticipated to vest in the future at March 30, 2019 313 27.91 7.81 205 Exercisable at March 30, 2019 145 26.05 6.38 205 Stock option exercises include “net exercises” for which the optionee received shares of common stock equal to the intrinsic value of the options (fair market value of common stock on the date of exercise less exercise price) reduced by any applicable withholding taxes. Restricted stock uni t s. one three not $462,000 $457,000 three March 30, 2019 March 31,2018, $581,000 $602,000 six March 30, 2019 March 31,2018, three six March 30, 2019 March 31, 2018 $763,000 $712,000 As of March 30, 2019, $611,000 1.62 The following table summarizes RSU activity: Weighted Restricted Average Stock Units Grant Date (Unit amounts in thousands) Outstanding Fair Value Balance, September 29, 2018 103 $ 30.40 Granted 35 21.57 Released (36 ) 25.28 Balance, March 30, 2019 102 29.16 |