CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	3 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 240,145	$ 327,908
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	113,682	104,135
Share-based compensation expense:
Stock options	45,591
(Increase) decrease in:
Accounts receivable	1,824,582	(628,212)
Contract asset		80,182
Inventories	110,592	(201,769)
Prepaid expenses and other current assets	(175,752)	(42,109)
Income taxes receivable		(2,456)
Increase (decrease) in:
Accounts payable	(63,299)	(101,437)
Accrued expenses	(228,820)	218,758
Income taxes payable	9,497
Contract liability	(191,892)	4,355
Net cash provided by (used in) operating activities	1,684,326	(240,645)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment	(72,846)	(17,429)
Net cash (used in) investing activities	(72,846)	(17,429)
CASH FLOWS FROM FINANCING ACTIVITIES:
Dividend paid	(19,788,092)
Net cash (used in) financing activities	(19,788,092)
Net (decrease) in cash and cash equivalents and restricted cash	(18,176,612)	(258,074)
Cash and cash equivalents and restricted cash, beginning of year	23,784,867	22,416,830
Cash and cash equivalents and restricted cash, end of year	$ 5,608,255	22,158,756
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash paid for income taxes		$ 2,456