CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	6 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 7,013,000	$ 8,789,000
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	928,000	884,000
Gain on disposal of fixed asset	(15,000)
Interest (income) on other investments	(68,000)
Unrealized loss (gain) on marketable securities	118,000	36,000
(Recovery of) provision for credit losses	(28,000)
Change to inventory reserve	(560,000)
Deferred income taxes	(994,000)	96,000
Stock based compensation expense	812,000	1,344,000
Gain on extinguishment of debt		(3,904,000)
Changes in operating assets and liabilities:
Accounts receivable	8,261,000	4,550,000
Inventories	(5,136,000)	(5,287,000)
Prepaid expenses and other current assets	11,000	(207,000)
Income tax receivable	(583,000)
Other assets	(17,000)	(130,000)
Accounts payable, accrued expenses, accrued salaries and wages, accrued income taxes	(8,654,000)	1,630,000
Net Cash Provided by (Used in) Operating Activities	1,088,000	7,801,000
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of property, plant, and equipment	(816,000)	(771,000)
Proceeds from disposal of fixed asset	38,000
Purchases of marketable securities and other investments	(10,078,000)	(40,000)
Net Cash Used in Investing Activities	(10,856,000)	(811,000)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from stock option exercises	45,000	155,000
Net Cash Provided by Financing Activities	45,000	155,000
Net (decrease) increase in Cash and Cash Equivalents	(9,723,000)	7,145,000
CASH AND CASH EQUIVALENTS - Beginning	41,730,000	34,806,000
CASH AND CASH EQUIVALENTS - Ending	32,007,000	41,951,000
SUPPLEMENTAL CASH FLOW INFORMATION
Interest paid	8,000	8,000
Income taxes paid	$ 4,469,000	$ 2,154,000