v3.26.1
Fair Value Measurements (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Mar. 31, 2026
Mar. 31, 2025
Sep. 30, 2025
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Assets, Fair Value Disclosure $ 740   $ 740   $ 1,120
Financial and Nonfinancial Liabilities, Fair Value Disclosure (609)   (609)   (984)
Business Combination, Contingent Consideration, Liability, Noncurrent (2,371)   (2,371)   (2,113)
Fair Value, Net Asset (Liability) 211,743   211,743   102,610
Equity Securities, FV-NI, Current 213,983   213,983   104,587
Equity Securities, FV-NI, Unrealized Gain (Loss) 17,706 $ 5,547 34,621 $ 7,862  
Debt Securities, Trading, Unrealized Gain (Loss)   $ (66) 0 (33)  
Equity Securities, FV-NI 213,983   213,983   104,587
Payments to Acquire Investments     0 $ 44,900  
Commitments          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Business Combination, Contingent Consideration, Liability, Noncurrent (2,371)   (2,371)   (2,113)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings     $ 258    
Fair Value, Liability, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]     Contingent consideration    
Fair Value, Inputs, Level 1 [Member]          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Assets, Fair Value Disclosure 740   $ 740   1,120
Financial and Nonfinancial Liabilities, Fair Value Disclosure (609)   (609)   (984)
Fair Value, Net Asset (Liability) 214,114   214,114   104,723
Equity Securities, FV-NI, Current 213,983   213,983   104,587
Fair Value, Inputs, Level 3 [Member]          
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]          
Business Combination, Contingent Consideration, Liability, Noncurrent (2,371)   (2,371)   (2,113)
Fair Value, Net Asset (Liability) $ (2,371)   $ (2,371)   $ (2,113)