Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Apr. 02, 2017	Mar. 27, 2016
Cash Flows From Operating Activities
Net earnings	$ 2,102,053	$ 1,632,313
Adjustments to reconcile net earnings to net cash provided by operating activities:
Depreciation and amortization	828,460	1,009,354
Gain on sale of assets	(34,376)
Loss on involuntary cancellation of available-for-sale securities	5,845
Gain on sale of available-for-sale securities		(24,299)
Changes in assets and liabilities
Decrease in inventories	52,295	67,330
Decrease in prepaid & other	117,874	169,928
Decrease in income taxes refundable		51,309
(Decrease) increase in accounts payable	(102,190)	160,234
Decrease in accrued expenses	(434,184)	(183,784)
(Decrease) increase in income taxes payable	(134,763)	196,565
Increase in other current liabilities	1,917,874	2,095,891
Net cash provided by operating activities	4,318,888	5,174,841
Cash Flows From Investing Activities
Expenditures for land, building and equip	(238,948)	(234,586)
Sale of assets	40,750
Net purchases of short-term investments	(970,717)	(66)
Proceeds from sale of available-for-sale securities		1,000,000
Purchases of marketable securities	(66,811)	(54,791)
Net cash (used in) provided by Investing activities	(1,235,726)	710,557
Cash Flows From Financing Activities
Proceeds from note payable	500,000
Payment of note payable	(500,000)
Payment of cash dividends	(2,632,095)	(2,632,095)
Net cash used in financing activities	(2,632,095)	(2,632,095)
Net Increase in Cash and Equivalents	451,067	3,253,303
Cash and Equivalents, Beginning of period	986,193	778,367
Cash and Equivalents, End of period	1,437,260	4,031,670
Supplemental Disclosures of Cash Flow Information Cash Paid During the Period for:
Interest	6,296
Income taxes	$ 1,266,763	$ 606,026