v3.26.1
Summary of Significant Accounting Policies - Narrative (Details)
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2026
USD ($)
contract
Dec. 31, 2025
USD ($)
Jun. 30, 2026
USD ($)
contract
Jun. 30, 2025
USD ($)
Jun. 30, 2026
USD ($)
segment
entity
contract
Jun. 30, 2025
USD ($)
segment
Dec. 31, 2025
USD ($)
segment
Dec. 31, 2024
USD ($)
Concentration Risk [Line Items]                
Number of controlled variable interest entities | entity         2      
Restricted cash $ 36,883,000 $ 38,300,000 $ 36,883,000 $ 36,946,000 $ 36,883,000 $ 36,946,000 $ 38,300,000  
Accounts receivable 25,719,000 15,748,000 25,719,000 19,400,000 25,719,000 19,400,000 15,748,000 $ 15,000,000.0
Investment income, interest, beneficial interests in securitized financial asset     4,300,000 4,400,000 8,700,000 9,000,000.0    
Long-lived asset, impairment     0 0 0 0    
Deferred rent assets 5,596,000 4,872,000 5,596,000 4,200,000 5,596,000 4,200,000 4,872,000 3,700,000
Deferred revenue $ 5,600,000 5,000,000.0 5,600,000 4,500,000 5,600,000 4,500,000 $ 5,000,000.0 $ 4,000,000.0
Deferred revenue recognized     100,000 100,000 200,000 100,000    
Income tax expense (benefit)     $ 0 $ 0 $ 0 $ 0    
Effective income tax rate reconciliation, percent     0.00% 0.00% 0.00% 0.00%    
Number of operating segments | segment         1 1    
Number of reportable segments | segment         1 1 1  
SS Holdings 2017 and subsidiaries (SEMTH)                
Concentration Risk [Line Items]                
Useful life of intangible assets 20 years   20 years   20 years      
Number of customers | contract 22,500   22,500   22,500      
Minimum                
Concentration Risk [Line Items]                
Finite lived intangible liability, useful life 3 years   3 years   3 years      
Maximum                
Concentration Risk [Line Items]                
Finite lived intangible liability, useful life 6 years   6 years   6 years      
Solar Renewable Energy Certificates                
Concentration Risk [Line Items]                
Inventory, net $ 0 $ 0 $ 0   $ 0   $ 0  
Revenue Benchmark | Top One Customer | Customer Concentration Risk                
Concentration Risk [Line Items]                
Concentration risk, percentage     13.00% 12.00% 10.00% 12.00%    
Accounts Receivable | Top One Customer | Customer Concentration Risk                
Concentration Risk [Line Items]                
Concentration risk, percentage 46.00% 41.00%