Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Mar. 31, 2019	Apr. 01, 2018
Cash Flows From Operating Activities
Net earnings	$ 2,804,066	$ 3,234,725
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	719,224	712,136
Increase in deferred taxes	43,861
Unrealized gain on marketable investment securities	(173,985)
Net purchases of marketable investment securities	(42,269)
Gain on sale of available-for-sale securities		(8,531)
Provisional estimate for reduction in deferred tax from tax act		(604,190)
Changes in assets and liabilities
(Increase) decrease in inventories	(65,900)	32,543
Decrease in prepaid & other	216,193	64,173
(Decrease) increase in accounts payable	(254,057)	(76,920)
Decrease in accrued expenses	(362,929)	(311,170)
(Decrease) increase in income taxes payable	(169,025)	35,454
Decrease in long-term deferred compensation	(17,440)
Increase in other current liabilities	2,046,729	1,924,203
Net cash provided by operating activities	4,744,468	5,002,423
Cash Flows From Investing Activities
Expenditures for land, building and equip	(389,734)	(712,861)
Net (purchases) sales and maturities of short-term investments	(297,691)	(176)
Proceeds from sale of available-for-sale securities		1,000,000
Purchases of marketable securities		(141,095)
Net cash (used in) provided by investing activities	(687,425)	145,868
Cash Flows From Financing Activities
Payment of cash dividends	(2,683,706)	(2,632,095)
Net cash used in financing activities	(2,683,706)	(2,632,095)
Net Increase in Cash and Equivalents	1,373,337	2,516,196
Cash and Equivalents, Beginning of period	1,008,433	604,671
Cash and Equivalents, End of period	2,381,770	3,120,867
Supplemental Disclosures of Cash Flow Information Cash Paid During the Period for:
Income taxes	$ 997,300	$ 1,119,800