REVENUE FROM CONTRACTS WITH CUSTOMERS - NARRATIVE (Details) - USD ($) $ in Thousands	6 Months Ended
Mar. 31, 2024	Mar. 31, 2023	Sep. 30, 2023
Disaggregation of Revenue [Line Items]
Contract with customer, liability, current	$ 320		$ 377
Contract with customer, liability, revenue recognized	$ 347	$ 969
Percentage anticipated to be recognized in next 12 months	100.00%
Revenue, remaining performance obligation (backlog)	$ 56
Capitalized contract cost net, preconstruction	324		$ 504
Capitalized contract cost, amortization of preconstruction	$ 155	$ 178
Minimum
Disaggregation of Revenue [Line Items]
Contract receivable retainage percentage	5.00%
Maximum
Disaggregation of Revenue [Line Items]
Contract receivable retainage percentage	10.00%

Contract Receivable Retainage Percentage

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Amount of amortization expense for asset recognized from cost incurred to obtain or fulfill contract with customer.

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Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer.

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Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable, classified as current.

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Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of transaction price allocated to performance obligation that has not been recognized as revenue.

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Percentage of remaining performance obligation to total remaining performance obligation not recognized as revenue.

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