CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)	3 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 2,319,000	$ 3,233,000
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	427,000	364,000
Deferred income taxes	(90,000)	188,000
Stock-based compensation expense	104,000	17,000
Changes in operating assets and liabilities:
Accounts receivable	3,726,000	1,240,000
Inventories	(688,000)	(2,402,000)
Prepaid expenses and other current assets	104,000	(137,000)
Accounts payable, accrued expenses, accrued salaries and wages, accrued income taxes	(2,137,000)	424,000
Net Cash Provided by Operating Activities	3,765,000	2,927,000
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of property, plant, and equipment	(143,000)	(181,000)
Net Cash Used in Investing Activities	(143,000)	(181,000)
Net Change in Cash and Cash Equivalents	3,622,000	2,746,000
CASH AND CASH EQUIVALENTS - Beginning	18,248,000	8,028,000
CASH AND CASH EQUIVALENTS - Ending	21,870,000	10,774,000
SUPPLEMENTAL CASH FLOW INFORMATION
Interest paid	6,000	13,000
Income taxes paid	$ 643,000	$ 735,000