Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Sep. 30, 2018	Oct. 01, 2017
Cash Flows From Operating Activities
Net income	$ 440,381	$ 195,192
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	232,130	236,084
Increase in deferred taxes	60,070
Unrealized gain on marketable securities	(238,278)
Net purchases of marketable securities	(13,515)
Gain on sale of available-for-sale securities		(8,531)
Changes in assets and liabilities
Increase in inventories	(70,153)	(29,473)
Decrease in prepaid & other	429,378	195,030
Increase in income taxes refundable		(115,257)
Decrease in accounts payable	(385,483)	(264,676)
Decrease in accrued expenses	(387,061)	(271,453)
Increase (decrease) in income taxes payable	56,000	(22,543)
Increase in other current liabilities	664,539	576,603
Net cash provided by operating activities	788,008	490,976
Cash Flows From Investing Activities
Net expenditures for land, building and equipment	(7,689)	(388,124)
Net sales & maturities (purchases) of short-term investments	99,121	(21)
Proceeds from sale of securities		1,000,000
Net purchases of marketable securities		(15,879)
Net cash provided by investing activities	91,432	595,976
Cash Flows From Financing Activities
Payment of cash dividends	(877,365)	(877,365)
Net cash used in financing activities	(877,365)	(877,365)
Net Change in Cash and Equivalents	2,075	209,587
Cash and Cash Equivalents, Beginning of period	1,008,433	604,671
Cash and Cash Equivalents, End of period	1,010,508	814,258
Supplemental Disclosures of Cash Flow Information Cash Paid During the Period for:
Income taxes	$ 27,000	$ 243,000