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Inventories (Details) - USD ($) $ in Thousands | 12 Months Ended |  |
--- | --- | --- | ---
Oct. 31, 2020 | Nov. 02, 2019 | Nov. 03, 2018 | Oct. 31, 2020 | Nov. 02, 2019
Inventories |  |  |  |  |
Raw materials |  |  |  | $ 119,481 | $ 99,041
Work-in-process |  |  |  | 13,738 | 13,657
Finished goods |  |  |  | 210,050 | 226,622
Deferred cost of goods sold |  |  |  | 40,747 | 53,051
Inventories before provision |  |  |  | 384,016 | 392,371
Reserve for excess and obsolescence | $ (39,637) | $ (47,322) | $ (50,938) | (39,637) | (47,322)
Total inventories |  |  |  | $ 344,379 | $ 345,049
Reserve for excess and obsolete inventory [Roll Forward] |  |  |  |  |
Valuation allowance, beginning balance | 47,322 | 50,938 | 51,206 |  |
Provisions | 24,701 | 28,085 | 30,615 |  |
Disposals | 32,386 | 31,701 | 30,883 |  |
Valuation allowance, ending balance | $ 39,637 | $ 47,322 | $ 50,938 |  |

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