Balance Sheet Components - Inventories (Details) - USD ($) $ in Thousands	Oct. 03, 2021	Jan. 03, 2021
Debt Instrument [Line Items]
Photo-voltaic modules	$ 178,957	$ 170,013
Microinverters	13,467	16,774
Energy Storage	24,709	4,548
Other solar power system component materials	24,292	19,247
Inventories	241,425	$ 210,582
Loan And Security Agreement Lien
Debt Instrument [Line Items]
Inventory, gross	$ 176,600

Inventory, Energy Storage, Net Of Reserves

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Inventory, Microinverters, Net Of Reserves

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Inventory, Other Solar Power System Component Materials, Net Of Reserves

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Inventory, Photo-Voltaic Modules , Net Of Reserves

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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.

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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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