Quarterly report pursuant to Section 13 or 15(d)

Revenue from Contracts with Customers - Additional Information (Details)

v3.21.2
Revenue from Contracts with Customers - Additional Information (Details) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]          
Contract with customer, asset, revenue recognized     $ 277,960,000 $ 276,492,000  
Contract with customer, asset, reclassified to receivable     288,012,000 285,036,000  
Contract with customer, liability, revenue recognized     98,570,000 44,446,000  
Contract with customer, liability, billings     70,884,000 50,697,000  
Revenue, remaining performance obligation $ 1,902,420,000   $ 1,902,420,000    
Contract term     25 years    
Capitalized project development costs, noncurrent 2,128,000   $ 2,128,000   $ 1,543,000
Capitalized contract cost, project development costs $ 3,109,000 $ 4,258,000 5,094,000 5,865,000  
Capitalized contract cost, impairment loss     $ 0 $ 0  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-07-01          
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]          
Revenue, remaining performance obligation, percentage 35.00%   35.00%    
Revenue, remaining performance obligation, remaining satisfaction 12 months   12 months