CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($)	6 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 21,652,000	$ 23,088,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	1,133,000	1,088,000
Interest (income) expense on other investments	(194,000)	(17,000)
Unrealized (gain) loss on marketable securities	(82,000)	(71,000)
(Recovery of) credit losses	(12,000)	(35,000)
Change to inventory reserve	(184,000)	720,000
Deferred income taxes	(1,584,000)	(1,405,000)
Stock based compensation expense	757,000	610,000
Changes in operating assets and liabilities:
Accounts receivable	8,454,000	(1,448,000)
Inventories	422,000	(5,005,000)
Prepaid expenses and other current assets	1,017,000	(124,000)
Income tax receivable	(1,129,000)	(292,000)
Other assets	81,000	20,000
Accounts payable, accrued expenses, accrued salaries and wages, accrued income taxes	(4,807,000)	1,564,000
Net Cash Provided by Operating Activities	25,524,000	18,693,000
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of property, plant, and equipment	(1,814,000)	(682,000)
Purchases of marketable securities	(7,642,000)	(117,000)
Purchases of other investments	(78,000)	(655,000)
Redemption of other investments	27,252,000
Net Cash Provided by (Used in) Investing Activities	17,718,000	(1,454,000)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from stock option exercises	54,000
Cash paid for dividend	(4,610,000)	(5,883,000)
Cash paid for purchase of treasury shares	(18,008,000)
Net Cash Used in Financing Activities	(22,564,000)	(5,883,000)
Net increase in Cash and Cash Equivalents	20,678,000	11,356,000
CASH AND CASH EQUIVALENTS - Beginning	65,341,000	35,955,000
CASH AND CASH EQUIVALENTS - Ending	86,019,000	47,311,000
SUPPLEMENTAL CASH FLOW INFORMATION
Interest paid	15,000	4,000
Income taxes paid	6,051,000	$ 5,165,000
Non-Cash Investing and Financing Transactions
Cash dividends declared and not paid	$ 4,554,000