FAIR VALUE MEASUREMENTS - Changes in Fair Value of Contingent Earnout Liabilities Measured at Fair Value on Recurring Basis Utilizing Level 1 and Level 3 Assumptions (Details) - Recurring [Member] - Contingent Earnout Liabilities [Member] - Level 1 and Level 3 [Member] - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2026	Mar. 31, 2025
FAIR VALUE MEASUREMENTS [Abstract]
Balances at beginning of period	$ 1,422	$ 2,380	$ 2,647	$ 2,350
Fair value adjustment of contingent earnout liabilities	0	30	0	60
Earnout payment	(1,328)	(1,078)	(2,553)	(1,078)
Balances at end of period	$ 94	$ 1,332	$ 94	$ 1,332

FAIR VALUE MEASUREMENTS - Changes in Fair Value of Contingent Earnout Liabilities Measured at Fair Value on Recurring Basis Utilizing Level 1 and Level 3 Assumptions (Details) - Recurring [Member] - Contingent Earnout Liabilities [Member] - Level 1 and Level 3 [Member] - USD ($)
$ in Thousands

3 Months Ended

6 Months Ended

Mar. 31, 2026

Mar. 31, 2025

Mar. 31, 2026

Mar. 31, 2025

FAIR VALUE MEASUREMENTS [Abstract]

Balances at beginning of period

$ 1,422

$ 2,380

$ 2,647

$ 2,350