CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	9 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 16,562,000	$ 12,062,000
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	1,398,000	1,320,000
Gain on disposal of fixed asset	(15,000)
Interest income on other investments	(177,000)
Unrealized loss (gain) on marketable securities	23,000	226,000
Recovery of credit losses	(118,000)
Change to inventory reserve	(85,000)	331,000
Deferred income taxes	(1,400,000)	(11,000)
Stock based compensation expense	1,134,000	1,379,000
Gain on extinguishment of debt		(3,904,000)
Changes in operating assets and liabilities:
Accounts receivable	5,166,000	3,872,000
Inventories	(813,000)	(11,309,000)
Prepaid expenses and other current assets	228,000	(318,000)
Income tax receivable	(688,000)
Other assets	48,000	(127,000)
Accounts payable, accrued expenses, accrued salaries and wages, accrued income taxes	(8,847,000)	4,892,000
Net Cash Provided by (Used in) Operating Activities	12,416,000	8,413,000
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of property, plant, and equipment	(2,547,000)	(1,189,000)
Proceeds from disposal of fixed asset	38,000
Purchases of marketable securities	(110,000)	(58,000)
Purchases of other investments	(30,185,000)
Redemption of other investments	10,091,000
Net Cash Used in Investing Activities	(22,713,000)	(1,247,000)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from stock option exercises	82,000	155,000
Net Cash Provided by Financing Activities	82,000	155,000
Net (decrease) increase in Cash and Cash Equivalents	(10,215,000)	7,321,000
CASH AND CASH EQUIVALENTS - Beginning	41,730,000	34,806,000
CASH AND CASH EQUIVALENTS - Ending	31,515,000	42,127,000
SUPPLEMENTAL CASH FLOW INFORMATION
Interest paid	12,000	12,000
Income taxes paid	$ 6,421,000	$ 2,154,000