v3.26.1
Fair Value Measurements - Schedule of Reconciliation of Fair Value Investments (Details) - USD ($)
$ in Thousands
 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Reconciliation of Other Investments (Level 3) [Roll Forward]    
Other investments, beginning balance $ 12,190 $ 13,071
Contributions 9 0
Distributions (386) (452)
Net gain (loss) $ (1,036) $ (429)
Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Net income attributable to HLI Net income attributable to HLI
Transfer in $ 0 $ 0
Transfer out (10,777)  
Other investments, ending balance 0 12,190
Level 3    
Reconciliation of Other Investments (Level 3) [Roll Forward]    
Transfer out   0
Private equity funds    
Reconciliation of Other Investments (Level 3) [Roll Forward]    
Other investments, beginning balance 4,265 5,519
Contributions 9 0
Distributions (15) (452)
Net gain (loss) 165 (802)
Transfer in 0 0
Transfer out (4,424)  
Other investments, ending balance 0 4,265
Private equity funds | Level 3    
Reconciliation of Other Investments (Level 3) [Roll Forward]    
Transfer out   0
Direct equity investments    
Reconciliation of Other Investments (Level 3) [Roll Forward]    
Other investments, beginning balance 7,925 7,552
Contributions 0 0
Distributions (371) 0
Net gain (loss) (1,201) 373
Transfer in 0 0
Transfer out (6,353)  
Other investments, ending balance $ 0 7,925
Direct equity investments | Level 3    
Reconciliation of Other Investments (Level 3) [Roll Forward]    
Transfer out   $ 0