ACCOUNTS RECEIVABLE AND CONTRACT COSTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Receivables [Abstract]
Allowances for doubtful accounts	$ 46	$ 40
Contract retainage balance included in accounts receivable	$ 142	202
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	$ 2,194	966
Estimated earnings	89	70
Costs and estimated earnings (loss) on uncompleted contracts	2,283	1,036
Less billings to date	1,947	1,112
Net costs and estimated earnings (loss) in excess of (less than) billings	336	(76)
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)	376	89
Billings in excess of costs and estimated earnings on uncompleted contracts (included in other current liabilities)	(40)	(165)
Net costs and estimated earnings (loss) in excess of (less than) billings	$ 336	$ (76)