Shareholders' Equity [Text Block] | Note 9 Shareholders' Equity Common Stock Our authorized capital stock consists of 75,000,000 shares of common stock, with a par value of $0.001 per share, and 10,000,000 preferred shares with a par value of $0.001 per share. During the year ended March 31, 2021, the Company issued (i)) 32,725,000 shares of common stock for $19,635,000; (iii) 2,950,000 shares of common stock for $1,011,000 upon the exercise of stock options and warrants; (iv) 501,467 shares upon cashless exercise of stock options and warrants; (v) 750,000 shares of common stock valued at $1,320,000 for investment in mineral properties (see Note 4 for further discussion); and (vi) 2,916,667 shares of common stock upon conversion of notes payable balances totaling $1,750,000 (See Note 7 for further discussion). During the year ended March 31, 2020, the Company issued (i) an aggregate of 250,000 shares of common stock for $100,000, (ii) 125,000 shares for $50,000 upon the exercise of stock options, and (iii) 250,000 shares of common stock valued at $85,000 in exchange for consulting services. The Company also issued options and warrants to purchase an aggregate of 800,000 shares of common stock at exercise prices ranging between $0.32 and $0.40 per share, expiring through January 2025. Dividends On November 13, 2020, the Company declared a special cash dividend of $0.22 per common share, totaling $4,357,246, to holders of record of 19,805,664 shares of common stock. Such dividend was paid in January 2021. JR Resources Option In connection with the May 2020 promissory note agreement between the Company and JR, as further described in Note 7 above, the Company provided JR the option to acquire up to 35,641,667 shares of common stock at an exercise price of $0.60 per share. JR exercised the option in two closings occurring in October 2020 and March 2021. Upon the first closing in October 2020, JR acquired 17,416,667 shares of Company common stock for aggregate consideration of $10,450,000, $9,000,000 in cash and $1,450,000 upon conversion of the principal amount of the May 2020 promissory note. In March 2021, the Company and JR effected the second and final closing under the option, whereby JR acquired 18,225,000 shares of Company common stock for aggregate consideration of $10,935,000, $10,635,000 in cash and $300,000 upon conversion of the principal amount of a promissory note issued in January 2021. The final closing resulted in a change in control of the Company to JR Resources. Common Stock Options and Warrants The Company's 2015 Omnibus Incentive Plan (the "Omnibus Plan") authorizes the Company to grant or issue non-qualified stock options, incentive stock options, stock appreciation rights, restricted stock, restricted stock units, performance shares, performance units, cash-based awards or other stock-based awards up to a total of 3,750,000 shares. Under the terms of the Omnibus Plan, awards may be granted to employees, directors and third-party service providers. Awards issued under the Omnibus Plan vest as determined by the board of directors at the time of grant. Any shares related to an award granted under the Omnibus Plan that terminates by expiration, forfeiture, or otherwise without the issuance of the shares shall be available again for grant under the Omnibus Plan. As of March 31, 2021, a total of 1,087,500 shares remained available for future grants under the Omnibus Plan. Outstanding stock options under the Omnibus Plan have terms ranging from 5 to 10 years. Outstanding stock options granted to third-party service providers generally vest over the period of the contract, which is typically one year. The Company recognized stock-based compensation related to issuance of stock options totaling $124,706 and $110,897 during the years ended March 31, 2021 and 2020, respectively, which is included in general and administrative expenses in the accompanying statements of operations. Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Life (In Years) Aggregate Intrinsic Value Outstanding as of March 31, 2020 2,662,500 $ 0.32 4.78 $ 1,025,000 Options granted 750,000 1.92 4.96 Options exercised (2,587,500 ) 0.32 — Outstanding as of March 31, 2021 825,000 1.77 4.86 285,000 Options vested or expected to vest as of March 31, 2021 75,000 0.32 3.84 135,000 Options exercisable as of March 31, 2021 75,000 $ 0.32 3.84 $ 135,000 During the year ended March 31, 2021, we estimated the fair value of each stock option on the date of grant using a Black Scholes valuation model. The weighted-average assumptions used to calculate the grant date fair value were as follows: (i) risk-free interest rate of 1.52%, (ii) estimated volatility of 80%, (iii) dividend yield of 0%, and (iv) expected life of 5 years. A summary of the Company's stock warrant activity and related information for the period ended March 31, 2021 is as follows: Shares Weighted Average Exercise Price Weighted Average Remaining Contractual Life (In Years) Outstanding as of March 31, 2020 825,000 $ 0.40 1.99 Warrants granted — — — Warrants exercised 825,000 $ 0.40 — Outstanding as of March 31, 2021 — $ — — |