Revenue from Contracts with Customers (Tables)

9 Months Ended

Sep. 27, 2020

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue

The following tables represent disaggregated revenue from contracts with customers for the three and nine months ended September 27, 2020, and September 29, 2019 along with the reportable segment for each category:

	Three Months Ended
(In thousands)	September 27, 2020								September 29, 2019
Category	Residential, Light Commercial		Commercial and Industrial Solutions		Others		Total		Residential, Light Commercial		Commercial and Industrial Solutions		Others		Total
Solar power systems sales and EPC services	191,016		73,840		2,688		267,544		195,686		58,507		8,354		262,547
Operations and maintenance	—		—		75		75		—		4,659		10,074		14,733
Residential leasing	1,284		—		—		1,284		3,523		—		—		3,523
Solar services1	5,485		418		—		5,903		4,881		358		—		5,239
Revenue	$	197,785	$	74,258	$	2,763	$	274,806	$	204,090	$	63,524	$	18,428	$	286,042

	Nine Months Ended
(In thousands)	September 27, 2020								September 29, 2019
Category	Residential, Light Commercial		Commercial and Industrial Solutions		Other		Total		Residential, Light Commercial		Commercial and Industrial Solutions		Other		Total
Solar power systems sales and EPC services	568,303		170,403		3,147		741,853		458,141		147,221		22,973		628,335
Operations and maintenance	—		3,619		19,844		23,463		—		7,696		29,592		37,288
Residential leasing	3,937		—		—		3,937		9,083		—		—		9,083
Solar services1	12,524		1,242		—		13,766		15,046		856		—		15,902
Revenue	$	584,764	$	175,264	$	22,991	$	783,019	$	482,270	$	155,773	$	52,565	$	690,608

1 Upon adoption of ASC 842, revenues from residential leasing are being accounted for under ASU No. 2014-09 ("ASC 606") and recorded under 'Solar services'

Changes in Estimates

Also included in the table is the net change in estimate as a percentage of the aggregate revenue for such projects.

	Three Months Ended						Nine Months Ended
(In thousands, except number of projects)	September 27, 2020			September 29, 2019			September 27, 2020			September 29, 2019
Increase (decrease) in revenue from net changes in transaction prices	$	1,142		$	—		$	834		$	(3,301)
Increase (decrease) in revenue from net changes in input cost estimates	(1,041)			1,734			(1,092)			4,144
Net decrease in revenue from net changes in estimates	$	101		$	1,734		(258)			$	843
Number of projects	2			1			4			2
Net change in estimate as a percentage of aggregate revenue for associated projects	0.3		%	3.6		%	(0.2)		%	1.5		%

Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction

Project	Revenue Category	EPC Contract/Partner Developed Project	Expected Year Revenue Recognition Will Be Completed	Average Percentage of Revenue Recognized
Various Distribution Generation Projects	Solar power systems sales and EPC services	Various	2021	76.9%