Quarterly report pursuant to Section 13 or 15(d)

Organization and Summary of Significant Accounting Policies - Additional Information (Details)

v3.21.1
Organization and Summary of Significant Accounting Policies - Additional Information (Details)
3 Months Ended
Mar. 31, 2021
USD ($)
segment
Dec. 31, 2020
USD ($)
Significant Accounting Policies [Line Items]    
Number of operating segments | segment 2  
Number of corporate non-operating segments | segment 1  
Prepaid contract costs $ 0 $ 0
Other (income) expense, net    
Significant Accounting Policies [Line Items]    
Gain on settlement of contract dispute for project completed in 2015 $ 10,000,000.0  
Minimum    
Significant Accounting Policies [Line Items]    
Property, plant and equipment, useful life 3 years  
Maximum    
Significant Accounting Policies [Line Items]    
Property, plant and equipment, useful life 25 years  
LC Facility    
Significant Accounting Policies [Line Items]    
Restricted cash $ 10,300,000 $ 0
LC Facility | Balance Sheet Date Classified as Current    
Significant Accounting Policies [Line Items]    
Maturity date, description maturity dates of twelve months or less from the balance sheet date classified as current  
LC Facility | Balance Sheet Date Classified as Noncurrent    
Significant Accounting Policies [Line Items]    
Maturity date, description maturity dates of longer than twelve months from the balance sheet date classified as noncurrent