Equity Investments - Equity Method Investments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 29, 2020	Dec. 29, 2019	Jun. 30, 2019
Schedule of Equity Method Investments [Line Items]
Equity investments with readily determinable fair value	$ 178,090	$ 173,908
Equity investments without readily determinable fair value:	7,481	8,661
Equity investments with fair value option	17,500	17,500
Equity method investments	230,264	226,602
Enphase Energy, Inc.
Schedule of Equity Method Investments [Line Items]
Equity investments with readily determinable fair value	178,090	173,908
Project entities
Schedule of Equity Method Investments [Line Items]
Equity investments without readily determinable fair value:	2,802	2,802
Other equity investments without readily determinable fair value1
Schedule of Equity Method Investments [Line Items]
Equity investments without readily determinable fair value:	4,679	5,859
Proceeds from return of capital	2,500
Equity securities gain	1,300
SunStrong Capital Holdings, LLC
Schedule of Equity Method Investments [Line Items]
Equity investments with fair value option	8,000	8,000
SunStrong Partners, LLC
Schedule of Equity Method Investments [Line Items]
Equity investments with fair value option	9,500	9,500
Equity method investments			$ 9,500
Total equity investment with fair value option
Schedule of Equity Method Investments [Line Items]
Equity investments with fair value option	17,500	17,500
Huansheng Corporation
Schedule of Equity Method Investments [Line Items]
Equity method investments	27,193	26,533
Total equity method investments
Schedule of Equity Method Investments [Line Items]
Equity method investments	$ 27,193	$ 26,533