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REVENUE RECOGNITION - Disaggregation of Revenues (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Disaggregation of Revenue [Line Items]
Total revenue	$ 37,254	$ 36,917
Deposits revenue
Disaggregation of Revenue [Line Items]
Total revenue	19,285	21,077
Deposits software and hardware | Transferred at Point in Time
Disaggregation of Revenue [Line Items]
Total revenue	11,097	14,048
Deposits services and other | Transferred over Time
Disaggregation of Revenue [Line Items]
Total revenue	8,188	7,029
Identity verification revenue
Disaggregation of Revenue [Line Items]
Total revenue	17,969	15,840
Identity verification software and hardware | Transferred at Point in Time
Disaggregation of Revenue [Line Items]
Total revenue	888	1,932
Identity verification services and other | Transferred over Time
Disaggregation of Revenue [Line Items]
Total revenue	$ 17,081	$ 13,908

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