Supplemental Financial Information - Narrative (Details) - USD ($) $ in Millions |
3 Months Ended | |
|---|---|---|
Jan. 04, 2020 |
Dec. 29, 2018 |
|
| Product Warranty Liability [Line Items] | ||
| Shipping and handling revenues | $ 3.5 | $ 3.3 |
| Shipping and handling cost of goods sold | $ 3.1 | $ 3.0 |
| Warrants outstanding (in shares) | 683,674 | |
| Common stock shares that may be called by warrants (in shares) | 341,837 | |
| Minimum | ||
| Product Warranty Liability [Line Items] | ||
| Extended product warranty, period | 2 years | |
| Maximum | ||
| Product Warranty Liability [Line Items] | ||
| Extended product warranty, period | 5 years | |