XML 52 R38.htm IDEA: XBRL DOCUMENT v3.20.2
Note 13 - Fair Value of Financial Instruments (Tables)
12 Months Ended
Sep. 27, 2020
Notes Tables  
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]
  

2020

  

2019

  

2018

 
             

Volatility (Percent)

  84   48   31 

Risk-free interest rate (Percent)

  0.12   1.58   2.91 

Expected term (Years)

  1.5   2.5   3.5 

Estimated fair value (Dollars)

  0.06   0.20   0.3