v3.26.1
FAIR VALUE MEASUREMENTS - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - Recurring Basis [Member] - USD ($)
$ in Thousands
Jun. 30, 2026
Mar. 31, 2026
Sep. 30, 2025
Jun. 30, 2025
Mar. 31, 2025
Sep. 30, 2024
FAIR VALUE MEASUREMENTS [Abstract]            
Investment in marketable securities at fair value $ 427   $ 33      
Restricted investments 250   250      
Total Assets 677   4,914      
Contingent earnout 1,535   2,647      
Mandatorily redeemable noncontrolling interest 2,722   4,161      
Total Liabilities 4,257   6,808      
Investment in Rubicon at fair value     4,631      
Level 1 [Member]            
FAIR VALUE MEASUREMENTS [Abstract]            
Investment in marketable securities at fair value 427   33      
Restricted investments 250   250      
Total Assets 677 $ 513 4,914 $ 2,759 $ 2,760 $ 1,824
Contingent earnout 64   1,143      
Mandatorily redeemable noncontrolling interest 0   0      
Total Liabilities 64   1,143      
Investment in Rubicon at fair value     4,631      
Level 2 [Member]            
FAIR VALUE MEASUREMENTS [Abstract]            
Investment in marketable securities at fair value 0   0      
Restricted investments 0   0      
Total Assets 0   0      
Contingent earnout 0   0      
Mandatorily redeemable noncontrolling interest 0   0      
Total Liabilities 0   0      
Investment in Rubicon at fair value     0      
Level 3 [Member]            
FAIR VALUE MEASUREMENTS [Abstract]            
Investment in marketable securities at fair value 0   0      
Restricted investments 0   0      
Total Assets 0   0      
Contingent earnout 1,471   1,504      
Mandatorily redeemable noncontrolling interest 2,722   4,161      
Total Liabilities $ 4,193   5,665      
Investment in Rubicon at fair value     $ 0