Consolidated Balance Sheets (USD $)	Jun. 30, 2013	Jul. 01, 2012
CURRENT ASSETS:
Cash and cash equivalents (Note 2)	$ 3,437,780	$ 2,332,022
Short-term investments (Note 3)	949,815	3,863,721
Inventories	519,179	535,412
Prepaid expenses and other	563,591	613,891
Income taxes refundable	58,129	313,518
Current deferred income taxes (Note 7)	6,658
TOTAL CURRENT ASSETS	5,535,152	7,658,564
LAND, BUILDINGS & EQUIPMENT, net (Note 4)	21,979,489	22,718,526
OTHER ASSETS:
Marketable investment securities (Note 3)	8,477,227	8,286,680
Cash surrender value-life insurance	648,717	619,624
Other	84,465	84,780
TOTAL OTHER ASSETS	9,210,409	8,991,084
TOTAL ASSETS	36,725,050	39,368,174
CURRENT LIABILITIES:
Accounts payable	694,454	722,380
Accrued expenses	1,045,645	1,004,221
Dividends payable	851,561	824,235
Other current liabilities	311,284	295,978
Income taxes payable	151,227
Current deferred income taxes (Note 7)		65,552
TOTAL CURRENT LIABILITIES	3,054,171	2,912,366
LONG-TERM DEFERRED COMPENSATION	39,194	44,217
NONCURRENT DEFERRED INCOME TAXES (Note 7)	2,599,884	2,726,437
TOTAL LIABILITIES	5,693,249	5,683,020
STOCKHOLDERS' EQUITY (Note 8)
Additional paid-in capital	7,849,814	7,727,264
Accumulated other comprehensive earnings-Unrealized gain on available-for-sale securities, net of tax	2,584,020	2,538,818
Retained earnings	20,081,870	22,903,925
TOTAL STOCKHOLDERS' EQUITY	31,031,801	33,685,154
TOTAL LIABILITIES AND STOCKHOLDERS'EQUITY	36,725,050	39,368,174
Common Class A [Member]
STOCKHOLDERS' EQUITY (Note 8)
Common stock	374,645	368,301
Common Class B [Member]
STOCKHOLDERS' EQUITY (Note 8)
Common stock	$ 141,452	$ 146,846