CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	3 Months Ended				6 Months Ended		12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2021	Dec. 31, 2020	Jun. 30, 2021
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 1,037,000	$ 7,752,000	$ 3,197,000	$ 2,319,000	$ 8,789,000	$ 5,516,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization					884,000	855,000
Gain on marketable securities					36,000
(Recovery of) provision for doubtful accounts						(130,000)
Deferred income taxes					96,000	(82,000)
Stock based compensation expense	1,255,000		84,000		1,344,000	188,000
Gain on extinguishment of debt					(3,904,000)
Changes in operating assets and liabilities:
Accounts receivable					4,550,000	1,839,000
Inventories					(5,287,000)	3,719,000
Prepaid expenses and other current assets					(207,000)	189,000
Other assets					(130,000)
Accounts payable, accrued expenses, accrued salaries and wages, accrued income taxes					1,630,000	(3,157,000)
Net Cash Provided by Operating Activities					7,801,000	8,937,000
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of property, plant, and equipment					(771,000)	(389,000)
Purchases of marketable securities					(40,000)
Net Cash Used in Investing Activities					(811,000)	(389,000)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from stock option exercises					155,000
Net Cash Provided by Financing Activities					155,000
Net increase in Cash and Cash Equivalents					7,145,000	8,548,000
CASH AND CASH EQUIVALENTS - Beginning		$ 34,806,000		$ 18,248,000	34,806,000	18,248,000	$ 18,248,000
CASH AND CASH EQUIVALENTS - Ending	$ 41,951,000		$ 26,796,000		41,951,000	26,796,000	$ 34,806,000
SUPPLEMENTAL CASH FLOW INFORMATION
Interest paid					8,000	10,000
Income taxes paid					$ 2,154,000	$ 1,351,000