Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] | 2. 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 31, 2019 July 1, 2018 March 31 , 201 9 Description Fair Value Cost basis Unrealized Gain/ (loss) Certificates of deposits and Treasury bills $ 630,720 $ 630,720 $ - Equity securities $ 4,965,174 $ 1,279,914 $ 3,685,260 Mutual fund $ 1,892,730 $ 1,906,564 $ (13,834 ) Ju ly 1 , 201 8 Description Fair Value Cost basis Unrealized Gain/ (loss) Certificates of deposits $ 333,029 $ 333,029 $ - Equity securities $ 4,816,804 $ 1,279,914 $ 3,536,890 Mutual fund $ 1,824,846 $ 1,864,296 $ (39,450 ) The fair values of the Company’s investments were determined as follows: March 31 , 201 9 Description Quoted Price for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Certificates of deposits and Treasury bills $ - $ 630,720 $ - Equity securities 4,965,174 - - Mutual fund 1,892,730 - - Total $ 6,857,904 $ 630,720 $ - Ju ly 1 , 201 8 Description Quoted Price for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Certificates of deposits $ - $ 333,029 $ - Equity securities 4,816,804 - - Mutual fund 1,824,846 - - Total $ 6,641,650 $ 333,029 $ - The shares of common stock included in the equity securities portfolio as of March 31, 2019 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 CenturyLink shares 4,398 Frontier Communications shares 300 Sprint shares 40,000 Verizon shares 31,904 Windstream shares 135 On May 25, 2018, 1 5 135 July 10, 2017, 1 15 300 4,508. The Mutual fund included in the table above is Vanguard GNMA Admiral Shares #536 |