Equity Investments - SunStrong LLC (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 29, 2020	Mar. 31, 2019	Dec. 29, 2019
Schedule of Investments [Line Items]
Gross loss	$ 37,448	$ (37,285)
Net income	(1,431)	(89,724)
Current assets	1,203,398		$ 1,380,931
Current liabilities	831,430		898,409
SunStrong Capital Holdings, LLC
Schedule of Investments [Line Items]
Revenue	29,464	22,626
Gross loss	(1,438)	(1,209)
Net income	21,640	$ 3,256
Current assets	149,248		225,576
Long-term assets	1,185,328		1,049,451
Current liabilities	113,980		125,601
Long-term liabilities	$ 866,389		$ 847,365