Summary of Significant Accounting Policies (Details)		12 Months Ended
	Oct. 14, 2020 shares	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Class of Stock [Line Items]
Stock split conversion ratio	1.19994
Weighted-average units (in shares) | shares	119,994,467
Restricted cash		$ 0	$ 50,995,000
Allowance for doubtful accounts		700,000	200,000
Amounts retained by project owners under contracts		4,100,000	6,100,000
Impairment of long lived assets		0	0	$ 0
Goodwill impairment		0	0	0
Impairment charge recognized		0	0	0
Amortization of debt discount and issuance costs		3,366,000	3,968,000	$ 2,991,000
Contract assets		18,100,000	16,100,000
Contract liabilities		149,800,000	328,800,000
Deferred revenue recognized		328,800,000	$ 21,800,000
Percentage of deferred revenue recognized			100.00%
Remaining performance obligation		$ 455,300,000
Percentage of performance obligation to be recognized		100.00%
Cash that is uninsured and uncollateralized		$ 108,200,000	$ 360,900,000
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-10-01
Class of Stock [Line Items]
Remaining performance obligation, period		12 months
Minimum
Class of Stock [Line Items]
Warranty service period		2 years
Maximum
Class of Stock [Line Items]
Warranty service period		20 years
Largest Customer | Revenue Benchmark | Customer Concentration Risk
Class of Stock [Line Items]
Concentration risk percentage		11.20%	17.20%	17.50%
Largest Customer | Trade Accounts Receivable | Customer Concentration Risk
Class of Stock [Line Items]
Concentration risk percentage		0.10%	29.50%
Five Largest Customers | Revenue Benchmark | Customer Concentration Risk
Class of Stock [Line Items]
Concentration risk percentage		40.90%	50.10%	50.90%
Five Largest Customers | Trade Accounts Receivable | Customer Concentration Risk
Class of Stock [Line Items]
Concentration risk percentage		20.90%	69.00%
Two Customers | Revenue Benchmark | Customer Concentration Risk
Class of Stock [Line Items]
Concentration risk percentage		21.50%	28.70%	28.30%
CARES Act Payroll Tax Deferral
Class of Stock [Line Items]
Deferred payment of employer share of social security taxes		$ 1,000,000.0
Member units
Class of Stock [Line Items]
Number of shares converted | shares	1,000
Common Stock
Class of Stock [Line Items]
Number of shares issued upon conversion | shares	100,000,000