Restructuring and Related Costs - Restructuring Reserve Rollforward (Details) - Test & Simulation $ in Thousands	3 Months Ended
Jan. 02, 2021 USD ($)
Restructuring Reserve [Roll Forward]
Balance, October 3, 2020	$ 8,516
Restructuring expense	978
Payments	(4,390)
Other adjustments	0
Currency translation	0
Balance, January 2, 2021	$ 5,104

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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No definition available.

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Amount of foreign currency translation gain (loss) which decreases (increases) the restructuring reserve.

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Amount of increase (decrease) in the restructuring reserve related to foreign currency translation (gain) loss and other increases (decreases).

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