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REVENUE RECOGNITION - Changes in contract assets and liabilities (Details) $ in Thousands | 6 Months Ended
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Mar. 31, 2021 USD ($)
REVENUE RECOGNITION |
Unbilled receivables beginning balance | $ 1,879
Additions | 1,371
Deductions | (857)
Unbilled receivables ending balance | 2,393
Customer advances beginning balance | 11,392
Additions | 77,700
Deductions | (73,906)
Customer advances ending balance | $ 15,186

X
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