CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	12 Months Ended
Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ 4,568,627	$ 1,986,801	$ (5,866,134)
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	449,189	493,361	570,314
Share-based compensation expense:
Stock options		68,172	316,369
Stock awards	191,749	183,222	149,952
Tax adjustment from share-based compensation		(7,899)	(54,055)
Provision for loss on unbilled receivables			1,237,841
(Gain) loss on disposal of property and equipment		3,605	(61,817)
Excess and obsolete inventory cost	92,829		225,742
Deferred income taxes	41	494,016	2,743,616
(Increase) decrease in:
Accounts receivable	1,762,494	(2,116,941)	2,025,168
Unbilled receivables, net	116,850	2,322,537	2,267,678
Inventories	(626,655)	951,488	647,728
Prepaid expenses and other current assets	(91,280)	371,684	(250,331)
Other non-current assets	(32,967)		(75,300)
Increase (decrease) in:
Accounts payable	(182,520)	67,790	(966,671)
Accrued expenses	(129,871)	(678,623)	(1,323,609)
Income taxes	(153,577)		(415,328)
Deferred revenue	100,769	(577,160)	230,426
Net cash provided by operating activities	6,065,678	3,562,053	1,401,589
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment	(153,038)	(352,762)	(188,509)
Proceeds from the sale of property and equipment		1,108	69,545
Net cash (used in) investing activities	(153,038)	(351,654)	(118,964)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from exercise of stock options			39,000
Purchases of treasury stock		(724,777)	(254,170)
Net cash (used in) financing activities		(724,777)	(215,170)
Net increase in cash and cash equivalents	5,912,640	2,485,622	1,067,455
Cash and cash equivalents, beginning of year	18,767,661	16,282,039	15,214,584
Cash and cash equivalents, end of year	24,680,301	18,767,661	$ 16,282,039
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash paid for income tax	$ 400,000	175,000
Cash received from income tax refund		$ 364,836

The total recognized tax benefit related to nonvested stock awards.

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