Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] | 2. Investments The Company's investments are categorized as available-for-sale. Short-term investments consist of certificates of deposits and Treasury bills with maturities of generally three one March 28, 2021 June 28, 2020 March 28, 2021 Unrealized Gain/ Description Fair Value Cost basis (loss) Short-term investments $ - $ - $ - Equity securities $ 5,153,120 $ 1,279,914 $ 3,873,206 Mutual fund $ 488,940 $ 480,235 $ 8,705 June 28, 2020 Unrealized Gain/ Description Fair Value Cost basis (loss) Short-term investments $ 134,202 $ 134,202 $ - Equity securities $ 4,725,470 $ 1,279,914 $ 3,445,556 Mutual funds $ 490,748 $ 475,179 $ 15,569 The fair values of the Company's investments were determined as follows: March 28, 2021 Quoted Significant Description Price for Identical Assets (Level 1) Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Certificates of deposits and Treasury bills $ - $ - $ - Equity securities 5,153,120 - - Mutual fund 488,940 - - Total $ 5,642,060 $ $ - June 28, 2020 Quoted Significant Description Price for Identical Assets (Level 1) Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Certificates of deposits $ - $ 134,202 $ - Equity securities 4,725,470 - - Mutual fund 490,748 - - Total $ 5,216,218 $ 134,202 $ - The shares of common stock included in the equity securities portfolio as of March 28, 2021 AT&T shares 82,112 Manulife shares 2,520 Uniti Group shares (formerly CSAL) 815 NCR shares 774 Teradata shares 774 Vodafone shares 6,471 Lumen Technologies 4,398 Frontier Communications shares 300 T-Mobile shares 4,102 Verizon shares 31,904 On April 1, 2020, 40,000 4,102 The Mutual fund included in the table above is Vanguard GNMA Admiral Shares #536 |