Related Party Transactions (Details Textual) $ in Millions	12 Months Ended
Dec. 29, 2018 USD ($)
Powersem
Related Party Transaction [Line Items]
Revenue from related parties	$ 0.7
Purchase from related party	4.5
Receivable from related parties	0.1
Payables to related parties	0.2
EB Tech
Related Party Transaction [Line Items]
Payables to related parties	0.1
Amount of transaction	0.5
ATEC
Related Party Transaction [Line Items]
Payables to related parties	0.5
Amount of transaction	$ 9.9
Powersem
Related Party Transaction [Line Items]
Ownership percentage	45.00%
EB Tech
Related Party Transaction [Line Items]
Ownership percentage	20.00%
ATEC
Related Party Transaction [Line Items]
Ownership percentage	24.00%

Amount for accounts payable to related parties.

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For an unclassified balance sheet, amount of receivables arising from transactions with related parties.

+ References

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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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Amount of transactions with related party during the financial reporting period.

+ References

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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

+ References

No definition available.

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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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