Equity Investments - Equity Method Investments (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 27, 2020	Sep. 27, 2020	Sep. 29, 2019	Dec. 29, 2019
Schedule of Equity Method Investments [Line Items]
Equity investments with readily determinable fair value	$ 331,293	$ 331,293		$ 173,908
Equity investments without readily determinable fair value:	801	801		801
Equity investments with fair value option	9,924	9,924		17,500
Equity method investments	342,018	342,018		192,209
Proceeds from return of capital		119,439	$ 42,957
Cash contributions	100
Enphase Energy, Inc.
Schedule of Equity Method Investments [Line Items]
Equity investments with readily determinable fair value	331,293	331,293		173,908
Project entities
Schedule of Equity Method Investments [Line Items]
Equity investments without readily determinable fair value:	122	122		122
Other Equity Investments Without Readily Determinable Fair Value
Schedule of Equity Method Investments [Line Items]
Equity investments without readily determinable fair value:	679	679		679
SunStrong Capital Holdings
Schedule of Equity Method Investments [Line Items]
Equity investments with fair value option	7,645	7,645		8,000
Proceeds from return of capital	500
SunStrong Partners
Schedule of Equity Method Investments [Line Items]
Equity investments with fair value option	2,279	2,279		9,500
Proceeds from return of capital	7,200
Total equity investment with fair value option
Schedule of Equity Method Investments [Line Items]
Equity investments with fair value option	$ 9,924	9,924		$ 17,500
Proceeds from return of capital		$ 7,700