v3.26.1
Summary of Significant Accounting Policies - Narrative (Details)
3 Months Ended 12 Months Ended
Mar. 31, 2026
USD ($)
Dec. 31, 2025
USD ($)
Mar. 31, 2026
USD ($)
segment
entity
Mar. 31, 2025
USD ($)
segment
Dec. 31, 2025
USD ($)
segment
Dec. 31, 2024
USD ($)
Mar. 31, 2023
contract
Concentration Risk [Line Items]              
Number of controlled variable interest entities | entity     2        
Restricted cash $ 35,608,000 $ 38,300,000 $ 35,608,000 $ 34,545,000 $ 38,300,000    
Accounts receivable 18,806,000 15,748,000 18,806,000   15,748,000 $ 15,000,000.0  
Investment income, interest, beneficial interests in securitized financial asset     4,300,000 4,600,000      
Long-lived asset, impairment     0 0      
Deferred rent assets 4,964,000 4,872,000 4,964,000   4,872,000 3,700,000  
Deferred revenue $ 5,100,000 5,000,000.0 5,100,000 4,100,000 $ 5,000,000.0 $ 4,000,000.0  
Deferred revenue recognized     100,000 100,000      
Income tax expense (benefit)     $ 0 $ 0      
Effective income tax rate reconciliation, percent     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
Number of customers | contract             22,500
Minimum              
Concentration Risk [Line Items]              
Finite lived intangible liability, useful life 3 years   3 years        
Maximum              
Concentration Risk [Line Items]              
Finite lived intangible liability, useful life 6 years   6 years        
Solar Renewable Energy Certificates              
Concentration Risk [Line Items]              
Inventory, net $ 0 $ 0 $ 0   $ 0    
Revenue Benchmark | Top One Customer | Customer Concentration Risk              
Concentration Risk [Line Items]              
Concentration risk, percentage       12.00%      
Accounts Receivable | Top One Customer | Customer Concentration Risk              
Concentration Risk [Line Items]              
Concentration risk, percentage 47.00% 41.00%