CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	6 Months Ended
Mar. 31, 2021	Mar. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 848,722	$ 766,013
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	224,478	205,154
Share-based compensation expense:
Stock options	90,185
Stock awards	159,980	159,992
Excess and obsolete inventory cost	(195,762)
Deferred income taxes		38
(Increase) decrease in:
Accounts receivable	1,521,544	(336,444)
Contract asset		(106,666)
Inventories	(167,014)	(350,368)
Prepaid expenses and other current assets	(160,952)	(105,615)
Income taxes receivable		(310,133)
Increase (decrease) in:
Accounts payable	263,517	276,682
Accrued expenses	(92,642)	(13,990)
Income taxes payable	29,181	(1,763)
Contract liability	(221,293)	67,905
Net cash provided by (used in) operating activities	2,299,944	250,805
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchases of property and equipment	(299,028)	(32,420)
Net cash (used in) investing activities	(299,028)	(32,420)
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from exercise of stock options		8,822
Dividend paid	(19,788,092)
Net cash (used in) provided by financing activities	(19,788,092)	8,822
Net (decrease) increase in cash and cash equivalents and restricted cash	(17,787,176)	227,207
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	5,997,691	22,644,037
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash paid for income taxes	$ 481	$ 2,456

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- References

No definition available.

+ Details

Name:	us-gaap_SupplementalCashFlowInformationAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration