CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	9 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 2,025,871	$ 853,179
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	301,550	342,359
Share-based compensation expense:
Stock awards	159,992	203,386
Deferred income taxes	38	33
(Increase) decrease in:
Accounts receivable	(1,516,119)	2,008,066
Contract asset	80,182	(30,170)
Inventories	(238,648)	(165,076)
Prepaid expenses and other current assets	(164,156)	(34,185)
Income taxes receivable, net	(303,280)	7,305
Increase (decrease) in:
Accounts payable	(129,993)	(706,655)
Accrued expenses	333,674	(56,169)
Contract liability	77,110	(173,790)
Net cash provided by operating activities	626,221	2,248,283
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment	(67,624)	(75,585)
Net cash used in investing activities	(67,624)	(75,585)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from exercise of stock options	8,822
Net cash provided by financing activities	8,822
Net increase in cash and cash equivalents	567,419	2,172,698
Cash and cash equivalents, beginning of year	22,416,830	20,390,713
Cash and cash equivalents, end of period	22,984,249	$ 22,563,411
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash paid for income tax	$ 2,456