Note 2 - Investments (Detail) - Fair Value Heirarchy (USD $)	Mar. 31, 2013	Jul. 01, 2012
Fair values of investments	$ 8,616,693	$ 8,286,680
Certificates of Deposit [Member] | Fair Value, Inputs, Level 1 [Member]
Fair values of investments	0	0
Certificates of Deposit [Member] | Fair Value, Inputs, Level 2 [Member]
Fair values of investments	948,724	3,863,721
Certificates of Deposit [Member] | Fair Value, Inputs, Level 3 [Member]
Fair values of investments	0	0
Equity Securities [Member] | Fair Value, Inputs, Level 1 [Member]
Fair values of investments	5,085,086	4,788,498
Equity Securities [Member] | Fair Value, Inputs, Level 2 [Member]
Fair values of investments	0	0
Equity Securities [Member] | Fair Value, Inputs, Level 3 [Member]
Fair values of investments	0	0
Mutual Funds [Member] | Fair Value, Inputs, Level 1 [Member]
Fair values of investments	3,531,607	3,498,182
Mutual Funds [Member] | Fair Value, Inputs, Level 2 [Member]
Fair values of investments	0	0
Mutual Funds [Member] | Fair Value, Inputs, Level 3 [Member]
Fair values of investments	0	0
Fair Value, Inputs, Level 1 [Member]
Fair values of investments	8,616,693	8,286,680
Fair Value, Inputs, Level 2 [Member]
Fair values of investments	948,724	3,863,721
Fair Value, Inputs, Level 3 [Member]
Fair values of investments	$ 0	$ 0