Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Revenue	$ 156,699	$ 147,001
Cost of revenue	136,768	145,437
Gross profit	19,931	1,564
Operating expenses:
Research and development	23,279	28,859
Sales and marketing	13,949	20,373
General and administrative	29,098	39,074
Total operating expenses	66,326	88,306
Loss from operations	(46,395)	(86,742)
Interest income	819	1,885
Interest expense	(20,754)	(21,800)
Interest expense to related parties	(1,366)	(1,612)
Other income (expense), net	(8)	265
Loss on extinguishment of debt	(14,098)	0
Gain (loss) on revaluation of embedded derivatives	284	(540)
Loss before income taxes	(81,518)	(108,544)
Income tax provision	124	208
Net loss	(81,642)	(108,752)
Less: net loss attributable to noncontrolling interests and redeemable noncontrolling interests	(5,693)	(3,832)
Net loss available to Class A and Class B common stockholders	$ (75,949)	$ (104,920)
Net loss per share attributable to Class A and Class B common stockholders, basic and diluted (in dollars per share)	$ (0.61)	$ (0.94)
Weighted average shares of common stock, basic and diluted (in shares)	123,763	111,842
Product
Revenue	$ 99,559	$ 90,926
Cost of revenue	72,489	88,772
Installation
Revenue	16,618	12,219
Cost of revenue	20,779	15,760
Service
Revenue	25,147	23,467
Cost of revenue	30,970	27,921
Electricity
Revenue	15,375	20,389
Cost of revenue	$ 12,530	$ 12,984