Related Party Transactions (Details) - Equity Method - USD ($) $ in Millions	12 Months Ended
Jan. 01, 2022	Dec. 26, 2020
Powersem
Related Party Transaction
Sales to related party	$ 0.2	$ 1.5
Purchase of material/services from related party	3.0	2.7
Accounts receivable balance	0.0	0.1
Accounts payable balance	0.0	0.1
EB Tech
Related Party Transaction
Sales to related party	0.0	0.0
Purchase of material/services from related party	0.4	0.0
Accounts receivable balance	0.0	0.0
Accounts payable balance	0.0	0.0
ATEC
Related Party Transaction
Sales to related party	0.0	0.0
Purchase of material/services from related party	12.6	8.7
Accounts receivable balance	0.0	0.0
Accounts payable balance	$ 1.8	$ 0.2
Powersem
Related Party Transaction
Ownership percentage	45.00%
EB Tech
Related Party Transaction
Ownership percentage	19.00%
ATEC
Related Party Transaction
Ownership percentage	24.00%

Amount for accounts payable to related parties.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Purchases during the period (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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