CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:
Net (loss) income	$ (3,653,905)	$ 4,568,627	$ 1,986,801
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	436,208	449,189	493,361
Share-based compensation expense:
Stock options			68,172
Stock awards	199,995	191,749	183,222
Tax adjustment from share-based compensation			(7,899)
(Gain) loss on disposal of property and equipment			3,605
Excess and obsolete inventory cost		92,829
Deferred income taxes	61,852	41	494,016
(Increase) decrease in:
Accounts receivable	225,336	1,762,494	(2,116,941)
Unbilled receivables, net	554,190	116,850	2,322,537
Inventories	(100,454)	(626,655)	951,488
Prepaid expenses and other current assets	288,899	(91,280)	371,684
Other non-current assets		(32,967)
Increase (decrease) in:
Accounts payable	208,541	(182,520)	67,790
Accrued expenses	(297,016)	(129,871)	(678,623)
Income taxes	258,931	(153,577)
Deferred revenue	76,447	100,769	(577,160)
Net cash (used in) provided by operating activities	(1,740,976)	6,065,678	3,562,053
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment	(2,548,612)	(153,038)	(352,762)
Proceeds from the sale of property and equipment			1,108
Net cash (used in) investing activities	(2,548,612)	(153,038)	(351,654)
CASH FLOWS FROM FINANCING ACTIVITIES:
Purchase of treasury stock			(724,777)
Net cash (used in) financing activities			(724,777)
Net increase in cash and cash equivalents	(4,289,588)	5,912,640	2,485,622
Cash and cash equivalents, beginning of year	24,680,301	18,767,661	16,282,039
Cash and cash equivalents, end of year	20,390,713	24,680,301	18,767,661
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash paid for income tax		$ 400,000	175,000
Cash received from income tax refund	265,588		$ 364,836
SUPPLEMENTAL DISCLOSURE OF NONCASH INFORMATION
Transfer from unbilled to accounts receivable	$ 926,632

The total recognized tax benefit related to nonvested stock awards.

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