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REVENUE RECOGNITION - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2020
Disaggregation of Revenue [Line Items] |  |  |
Contract assets | $ 48,210 | $ 23,998 |
Contract liabilities | $ 31,871 | $ 19,752 |
Revenue Benchmark | Product Concentration Risk | Transferred over Time |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Concentration risk, percentage | 12.00% | 11.00% | 5.00%

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