v3.26.3
FAIR VALUE MEASUREMENTS - Narrative (Details)
 1 Months Ended 3 Months Ended 9 Months Ended
Jul. 01, 2026
shares
Jun. 23, 2026
USD ($)
shares
Sep. 30, 2025
USD ($)
$ / shares
Sep. 30, 2026
USD ($)
letterOfCredit
Sep. 30, 2025
USD ($)
$ / shares
Sep. 30, 2026
USD ($)
letterOfCredit
Sep. 30, 2025
USD ($)
$ / shares
Dec. 31, 2025
USD ($)
Jul. 31, 2023
USD ($)
Sep. 30, 2021
USD ($)
Jan. 31, 2021
USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Investment in debt securities           $ 0 $ 6,300,000        
Allowance for credit losses during period       $ 0   0          
Maximum loss exposure, amount       72,900,000   $ 72,900,000          
Product warranty, term           25 years          
Change in profit element and risk premium       0 $ 0 $ 3,526,000 (781,000)        
Change in discount rate       0 0 3,332,000 5,715,000        
Increase in liability as a result of increasing the profit element and risk premium input by 100 basis points           1,400,000          
Decrease in liability as a result of decreasing the profit element and risk premium input by 100 basis points           1,400,000          
Decrease in liability as a result of increasing the discount rate by 100 basis points           12,700,000          
Increase in liability as a result of decreasing the discount rate by 100 basis points           14,300,000          
Level 3 | Warranty obligations for products sold since January 1, 2014                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Change in profit element and risk premium       0 0 3,526,000 (781,000)        
Change in discount rate       $ 0 0 $ 3,332,000 5,715,000        
Variable Interest Entity, Not Primary Beneficiary                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Equity investment, ownership       19.99%   19.99%          
Maximum loss exposure, amount       $ 5,000,000   $ 5,000,000          
Secured Revolving Credit Facility | Variable Interest Entity, Not Primary Beneficiary                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Maximum loss exposure, amount       30,000,000   30,000,000          
Financing receivable, committed amount       $ 30,000,000.0   $ 30,000,000.0          
Interest rate       9.00%   9.00%          
Letter of credit | Variable Interest Entity, Not Primary Beneficiary                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Maximum loss exposure, amount       $ 35,000,000   $ 35,000,000          
Financing receivable, number of letters of credit | letterOfCredit       3   3          
Guarantor obligations       $ 35,000,000.0   $ 35,000,000.0          
Guarantee obligations, fair value       800,000   800,000          
Secured Loan Receivable One | Variable Interest Entity, Not Primary Beneficiary                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Maximum loss exposure, amount       1,777,000   $ 1,777,000          
Financing receivable cash interest rate           15.00%          
Secured Loan Receivable Two | Variable Interest Entity, Not Primary Beneficiary                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Maximum loss exposure, amount       $ 1,082,000   $ 1,082,000          
Financing receivable cash interest rate           15.00%          
Minimum                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Loan receivables, contractual maturities       1 year   1 year          
Maximum                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Loan receivables, contractual maturities       3 years   3 years          
Related Party                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Equity securities, equity for interest exchange, agreement   $ 500,000                  
Equity securities, equity for interest exchange, percent of cash interest payments for conversion   0.80                  
Equity securities, equity for interest exchange, shares received (in shares) | shares 874,064 874,064                  
Equity securities, equity exchange for interest, fair value           $ 300,000          
Equity securities, equity for interest exchange, loss           200,000          
Convertible Notes | Related Party                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Investment in debt securities     $ 6,300,000                
Conversion ratio     0.4678363                
Convertible Debt | Convertible Notes | Related Party                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Investments in debt securities       $ 2,300,000   2,300,000   $ 6,300,000      
Decrease in fair value       2,900,000   4,000,000.0          
Investment in debt securities     $ 6,300,000                
Debt instrument face amount     $ 7,000,000.0   $ 7,000,000.0   $ 7,000,000.0        
Interest rate     7.00%   7.00%   7.00%        
Debt conversion price (in usd per share) | $ / shares     $ 2.14   $ 2.14   $ 2.14        
Investments in debt securities                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Decrease in fair value       26,531,000 $ 3,174,000 29,281,000 $ 12,315,000        
Privately-Held Company                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Investments in debt securities       20,300,000   20,300,000   29,600,000     $ 25,000,000.0
Privately-Held Company | Investments in debt securities                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Decrease in fair value       7,900,000   9,300,000          
Secured Convertible Promissory Notes 2021                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Investments in debt securities       3,800,000   3,800,000   11,000,000.0   $ 13,000,000.0  
Secured Convertible Promissory Notes 2021 | Investments in debt securities                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Decrease in fair value       6,400,000   7,200,000          
Secured Convertible Promissory Notes 2023                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Investments in debt securities       5,700,000   5,700,000   $ 14,500,000 $ 15,000,000.0    
Secured Convertible Promissory Notes 2023 | Investments in debt securities                      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]                      
Decrease in fair value       $ 8,800,000   $ 8,800,000