Quarterly report pursuant to Section 13 or 15(d)

Debt and Financing Lease Liabilities - Additional Information (Details)

v3.23.3
Debt and Financing Lease Liabilities - Additional Information (Details)
1 Months Ended 5 Months Ended 9 Months Ended
Sep. 30, 2023
USD ($)
Sep. 28, 2023
USD ($)
Aug. 24, 2023
USD ($)
Aug. 18, 2023
USD ($)
Aug. 04, 2023
USD ($)
May 31, 2023
USD ($)
Apr. 18, 2023
USD ($)
lender
Mar. 31, 2023
USD ($)
Sep. 30, 2023
USD ($)
Sep. 30, 2023
USD ($)
Sep. 30, 2023
USD ($)
Sep. 30, 2023
USD ($)
Sep. 30, 2022
USD ($)
Aug. 23, 2023
Mar. 31, 2023
CAD ($)
Mar. 30, 2023
USD ($)
Mar. 28, 2023
USD ($)
note
Mar. 17, 2023
bank
Mar. 16, 2023
Debt Instrument [Line Items]                                      
Payment on seller's promissory note                       $ 12,500,000 $ 0            
Bright Canyon Corporation                                      
Debt Instrument [Line Items]                                      
Fixed interest rate, percentage 5.00%               5.00% 5.00% 5.00% 5.00%              
Asset acquisition, total purchase price         $ 76,758,000                            
Cash payment for asset acquisition         5,000,000                            
Payable to seller $ 34,194,000       46,694,000       $ 34,194,000 $ 34,194,000 $ 34,194,000 $ 34,194,000              
Asset acquisition, debt assumed         $ 36,270,000                            
Payment on seller's promissory note                   12,500,000                  
Bright Canyon Corporation | Earlier Of Phase 2 Close Date Or December 2023                                      
Debt Instrument [Line Items]                                      
Payable to seller 5,900,000               5,900,000 5,900,000 5,900,000 5,900,000              
Bright Canyon Corporation | January 2024                                      
Debt Instrument [Line Items]                                      
Payable to seller $ 28,294,000               $ 28,294,000 $ 28,294,000 $ 28,294,000 $ 28,294,000              
Interest rate swap instruments | Designated                                      
Debt Instrument [Line Items]                                      
Notional amount               $ 14,084,000               $ 14,084,000      
None-recourse Term Shelf Notes Due December 2047 | Senior Notes                                      
Debt Instrument [Line Items]                                      
Fixed interest rate, percentage                                 5.99%    
Number of notes | note                                 3    
Original principal amount                                 $ 22,625,000    
Debt issuance costs                                 282,000    
Debt discount                                 $ 3,123,000    
Term Loan Due March 28, 2028 | Secured Debt                                      
Debt Instrument [Line Items]                                      
Maximum borrowing capacity                               $ 14,084,000      
Fixed interest rate, percentage 7.17%               7.17% 7.17% 7.17% 7.17%       7.17%      
Term Loan Due March 28, 2028 | Term Loan                                      
Debt Instrument [Line Items]                                      
Maximum borrowing capacity                               $ 359,000      
Term Loan Due March 28, 2028 | Letter of Credit                                      
Debt Instrument [Line Items]                                      
Maximum borrowing capacity                               $ 899,000      
Revolving Credit Facility | Senior Secured Credit Facility, Revolver And Term Loans | Line of Credit                                      
Debt Instrument [Line Items]                                      
Line of credit facility, number of banks | bank                                   5  
Revolving Credit Facility | Senior Secured Credit Facility, Revolver And Term Loans | Line of Credit | Quarters ending March 31, 2023 and June 30, 2023                                      
Debt Instrument [Line Items]                                      
Total funded debt to EBITDA covenant ratio, maximum                                   4.00 3.50
Revolving Credit Facility | Senior Secured Credit Facility, Revolver And Term Loans | Line of Credit | Quarter ending September 30, 2023                                      
Debt Instrument [Line Items]                                      
Total funded debt to EBITDA covenant ratio, maximum     4.25                     3.50          
Revolving Credit Facility | Senior Secured Credit Facility, Revolver And Term Loans | Line of Credit | Thereafter                                      
Debt Instrument [Line Items]                                      
Total funded debt to EBITDA covenant ratio, maximum     3.50                             3.5  
Revolving Credit Facility | Delayed Draw Term Loan | Line of Credit                                      
Debt Instrument [Line Items]                                      
Maximum borrowing capacity     $ 220,000,000                                
Debt restructuring costs     55,000,000                                
Payment due November 15, 2023     $ 45,000,000                                
Revolving Credit Facility | Non-recourse Fixed Rate Note, Due August, 2039 | Line of Credit                                      
Debt Instrument [Line Items]                                      
Maximum borrowing capacity   $ 500,000,000       $ 215,000,000   125,000,000                      
Fixed interest rate, percentage   6.70%       6.38%                   6.50%      
Proceeds from lines of credit   $ 135,544,000       $ 90,000,000   $ 30,000,000                      
Line of credit facility, additional borrowing capacity           $ 90,000,000                          
Line of credit $ 334,717,000               $ 334,717,000 $ 334,717,000 $ 334,717,000 $ 334,717,000              
Internal rate of return, percentage 8.51%               8.51% 8.51% 8.51% 8.51%              
Revolving Credit Facility | Non-recourse Fixed Rate Note, Due August, 2039 | Line of Credit | August 31, 2027 through August 31, 2029                                      
Debt Instrument [Line Items]                                      
Internal rate of return prepayment percentage               102.00%                      
Revolving Credit Facility | Non-recourse Fixed Rate Note, Due August, 2039 | Line of Credit | September 1, 2029 through August 30, 2031                                      
Debt Instrument [Line Items]                                      
Internal rate of return prepayment percentage               101.00%                      
Revolving Credit Facility | Non-recourse construction revolvers | Line of Credit                                      
Debt Instrument [Line Items]                                      
Maximum borrowing capacity                             $ 100,000,000        
Fixed interest rate, percentage 2.00%             2.00% 2.00% 2.00% 2.00% 2.00%     2.00%        
Line of credit $ 0               $ 0 $ 0 $ 0 $ 0              
Line of credit facility, availability period               5 years                      
Revolving Credit Facility | Non-recourse construction revolvers | Line of Credit | Minimum                                      
Debt Instrument [Line Items]                                      
Fixed interest rate, percentage 1.00%               1.00% 1.00% 1.00% 1.00%              
Debt instrument term 1 year                                    
Revolving Credit Facility | Non-recourse construction revolvers | Line of Credit | Maximum                                      
Debt Instrument [Line Items]                                      
Fixed interest rate, percentage 3.00%               3.00% 3.00% 3.00% 3.00%              
Debt instrument term 20 years                                    
Revolving Credit Facility | Non-recourse Construction Credit Facility, Due July 2024 | Line of Credit                                      
Debt Instrument [Line Items]                                      
Fixed interest rate, percentage             6.54%                        
Revolving Credit Facility | Non-recourse Construction Credit Facility, Due July 2024 | Line of Credit | Corporate Joint Venture                                      
Debt Instrument [Line Items]                                      
Maximum borrowing capacity             $ 140,844,000                        
Proceeds from lines of credit             $ 90,921,000       $ 32,206,000                
Number of lenders | lender             2                        
Revolving Credit Facility | Non-recourse Construction Credit Facility | Line of Credit                                      
Debt Instrument [Line Items]                                      
Fixed interest rate, percentage       9.32%                              
Interest rate       4.00%                              
Revolving Credit Facility | Non-recourse Construction Credit Facility | Line of Credit | Corporate Joint Venture                                      
Debt Instrument [Line Items]                                      
Maximum borrowing capacity       $ 300,000,000                              
Proceeds from lines of credit       200,000,000         $ 15,240,000                    
Proceeds used to reimburse development and construction cost       $ 187,000,000                              
Unused commitment fee percentage       0.25%                              
Maturity extension option period       1 year                              
Payment for extension fee       $ 3,000,000