ACCOUNTS RECEIVABLE AND CONTRACT COSTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Receivables [Abstract]
Allowances for doubtful accounts	$ 42	$ 46
Contract retainage balance included in accounts receivable	$ 308	142
Expected collection period of retainage balance	1 year
Expected collection period of retainage balance after the related contracts have received final acceptance and approval	45 days
Costs and estimated earnings (loss) on uncompleted contracts
Costs incurred on uncompleted contracts	$ 3,266	2,194
Estimated earnings	239	89
Costs and estimated earnings (loss) on uncompleted contracts	3,505	2,283
Less billings to date	3,085	1,947
Net costs and estimated earnings (loss) in excess of (less than) billings	420	336
Costs and estimated earnings (loss) on uncompleted contracts included in the consolidated balance sheets
Costs and estimated earnings in excess of billings on uncompleted contracts (included in other current assets)	462	376
Billings in excess of costs and estimated earnings on uncompleted contracts (included in other current liabilities)	(42)	(40)
Net costs and estimated earnings (loss) in excess of (less than) billings	$ 420	$ 336