CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	6 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 2,562,628	$ 848,722
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	188,136	224,478
Share-based compensation expense
Stock options	90,185	90,185
Stock awards	159,995	159,980
Excess and obsolete inventory cost		(195,762)
Deferred income taxes	527,141
(Increase) decrease in:
Accounts receivable	(9,355)	1,521,544
Inventories	(143,869)	(167,014)
Prepaid expenses and other current assets	(44,955)	(160,952)
Increase (decrease) in:
Accounts payable	121,072	263,517
Accrued expenses	67,412	(92,642)
Income taxes payable	59,978	29,181
Contract liability	(140,776)	(221,293)
Net cash provided by operating activities	3,437,592	2,299,944
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment	(84,358)	(299,028)
Net cash used in investing activities	(84,358)	(299,028)
CASH FLOWS FROM FINANCING ACTIVITIES:
Dividend paid		(19,788,092)
Net cash used in financing activities		(19,788,092)
Net increase (decrease) in cash and cash equivalents	3,353,234	(17,787,176)
Cash and cash equivalents, beginning of year	8,265,606	23,784,867
Cash and cash equivalents, end of year	11,618,840	5,997,691
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash paid for income taxes	$ 110,481	$ 481