REVENUE RECOGNITION - Narrative (Details) - USD ($)	3 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Sep. 30, 2025
Disaggregation of Revenue [Line Items]
Revenue recognized included in contract liability balance at the beginning of the period	$ 14,600,000	$ 10,600,000
Unbilled receivables	3,300,000		$ 2,000,000.0
Allowance for credit losses	2,600,000		2,800,000
Amortization of costs capitalized to obtain revenue contracts	606,000	472,000
Impairment losses recognized on contract costs	0	0
Selling and marketing
Disaggregation of Revenue [Line Items]
Amortization of costs capitalized to obtain revenue contracts	600,000	$ 600,000
Other Current and Non-current Assets
Disaggregation of Revenue [Line Items]
Contract costs	$ 5,100,000		$ 4,000,000.0
Software license
Disaggregation of Revenue [Line Items]
Invoice payment period (no more than)	60 days
SaaS, maintenance, and other
Disaggregation of Revenue [Line Items]
Invoice payment period (no more than)	60 days
Minimum
Disaggregation of Revenue [Line Items]
Estimated useful lives of intangible assets (in years)	3 years
Revenue, remaining performance obligation, amount period	13 months
Minimum | Software
Disaggregation of Revenue [Line Items]
Estimated useful lives of intangible assets (in years)	1 year
Maximum
Disaggregation of Revenue [Line Items]
Estimated useful lives of intangible assets (in years)	7 years
Revenue, remaining performance obligation, amount period	36 months
Maximum | Software
Disaggregation of Revenue [Line Items]
Estimated useful lives of intangible assets (in years)	3 years