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v3.20.1

Acquisitions (Details) $ in Thousands |  |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | --- | ---
Nov. 01, 2019 USD ($) | Nov. 19, 2018 USD ($) employee | Mar. 28, 2020 USD ($) | Mar. 30, 2019 USD ($) | Mar. 28, 2020 USD ($) | Mar. 30, 2019 USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |
Business Combination, Acquisition Related Costs |  |  | $ 300 | $ 400 | $ 7,400 | $ 800
Onshape [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Business Combination, Consideration Transferred | $ 469,000 |  |  |  |  |
Goodwill, acquired | 364,900 |  |  |  | $ 364,910 |
Liabilities | 4,100 |  |  |  |  |
Frustum [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Business Combination, Consideration Transferred |  | $ 69,500 |  |  |  |
Goodwill, acquired |  | 53,700 |  |  |  |
Liabilities |  | $ 2,100 |  |  |  |
Acquired finite-lived intangible asset, weighted average useful life |  | 15 years |  |  |  |
Cash Acquired from Acquisition |  | $ 700 |  |  |  |
Entity Number of Employees | employee |  | 12 |  |  |  |
Customer lists and relationships | Onshape [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Finite-lived Intangible Assets Acquired | 56,800 |  |  |  |  |
Purchased software | Onshape [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Finite-lived Intangible Assets Acquired | 47,300 |  |  |  |  |
Purchased software | Frustum [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Finite-lived Intangible Assets Acquired |  | $ 17,900 |  |  |  |
Trademarks [Member] | Onshape [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Finite-lived Intangible Assets Acquired | $ 3,600 |  |  |  |  |
Minimum [Member] | Onshape [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Acquired finite-lived intangible asset, weighted average useful life | 10 years |  |  |  |  |
Maximum [Member] | Customer lists and relationships | Onshape [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Acquired finite-lived intangible asset, weighted average useful life | 10 years |  |  |  |  |
Maximum [Member] | Purchased software | Onshape [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Acquired finite-lived intangible asset, weighted average useful life | 16 years |  |  |  |  |
Maximum [Member] | Trademarks [Member] | Onshape [Member] |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |
Acquired finite-lived intangible asset, weighted average useful life | 15 years |  |  |  |  |

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