Condensed Consolidated Statements Of Comprehensive Earnings (Unaudited) (Parentheticals) - USD ($)	3 Months Ended
Oct. 01, 2017	Oct. 02, 2016
Unrealized gain (loss) on available-for-sale securities tax	$ 90,594	$ (116,046)
Reclassification adjustment for gain tax	$ 2,167	$ (2,227)

Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 320
-SubTopic 10
-Section 50
-Paragraph 9
-Subparagraph (d)
-URI http://asc.fasb.org/extlink&oid=82897076&loc=d3e27357-111563

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section 45
-Paragraph 12
-URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e640-108580

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