Condensed Consolidated Statements of Operations (unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Revenue	$ 200,707	$ 169,361
Cost of revenue	184,952	125,695
Gross profit	15,755	43,666
Operating expenses:
Research and development	28,859	14,731
Sales and marketing	20,463	8,262
General and administrative	39,074	14,988
Total operating expenses	88,396	37,981
Gain (loss) from operations	(72,641)	5,685
Interest income	1,885	415
Interest expense	(15,962)	(21,379)
Interest expense to related parties	(1,612)	(2,627)
Other income (expense), net	265	(75)
Loss on revaluation of warrant liabilities and embedded derivatives	0	(4,034)
Net loss before income taxes	(88,065)	(22,015)
Income tax provision	208	333
Net loss	(88,273)	(22,348)
Net loss attributable to noncontrolling interests and redeemable noncontrolling interests	(3,832)	(4,632)
Net loss attributable to Class A and Class B common stockholders	$ (84,441)	$ (17,716)
Net loss per share attributable to Class A and Class B common stockholders, basic and diluted (in dollars per share)	$ (0.76)	$ (1.70)
Weighted average shares used to compute net loss per share attributable to Class A and Class B common stockholders, basic and diluted (in shares)	111,842	10,403
Product
Revenue	$ 141,734	$ 121,307
Cost of revenue	124,000	80,355
Installation
Revenue	22,258	14,118
Cost of revenue	24,166	10,438
Service
Revenue	23,290	19,907
Cost of revenue	27,557	24,253
Electricity
Revenue	13,425	14,029
Cost of revenue	$ 9,229	$ 10,649