CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash flows from operating activities:
Net income (loss)	$ 1,947,000	$ 334,000
Adjustments to reconcile net income (loss) to net cash:
Stock compensation expense	456,000	698,000
Foreign exchange loss (gain)	(19,000)	143,000
Depreciation and amortization	1,238,000	1,267,000
Deferred income taxes	(2,677,000)	57,000
Disposal loss (gain)	60,000	(4,000)
Non-cash R& D services	306,000	0
Other	142,000	326,000
Other changes in assets and liabilities:
Accounts receivable, net	91,000	(271,000)
Inventories	(610,000)	(1,080,000)
Costs in excess of billings and unbilled receivables	(109,000)	310,000
Prepaid expenses and other assets	243,000	8,000
Accounts payable	748,000	(176,000)
Accrued expenses and other liabilities	(218,000)	368,000
Deferred revenue	(110,000)	129,000
Net cash from operating activities	1,488,000	2,109,000
Cash flows from investing activities:
Proceeds from sale of property, plant and equipment	3,000	4,000
Purchases of property, plant and equipment	(913,000)	(1,514,000)
Purchases of intangibles	(69,000)	(102,000)
Net cash from investing activities	(979,000)	(1,612,000)
Cash flows from financing activities:
Proceeds from issuance of common stock	17,000	16,000
Net proceeds from issuance of convertible notes	0	840,000
Principal payments on capital leases	(106,000)	(118,000)
Proceeds from (payments of) line of credit, net	0	545,000
Payments on long-term debt	(621,000)	(349,000)
Net cash from financing activities	(710,000)	934,000
Effect of exchange rates on cash and cash equivalents	9,000	(119,000)
Net change in cash and cash equivalents	(192,000)	1,312,000
Cash and cash equivalents, beginning	2,607,000	1,295,000
Cash and cash equivalents, ending	$ 2,415,000	$ 2,607,000