Note 8 - Stock-Based Compensation	3 Months Ended
Mar. 31, 2021
Share-based Payment Arrangement [Abstract]
Stock-Based Compensation	NOTE 8 — Stock-Based Compensation The Company recognizes the compensation cost in the financial statements for all stock-based awards to employees, including grants of stock options and restricted stocks, based on the fair value of the awards as of the date that the awards are issued. Compensation cost for stock-based awards is recognized on a straight-line basis over the vesting period. The fair values of stock options are generally determined using a binomial lattice valuation model which incorporates assumptions about expected volatility, risk-free interest rate, dividend yield, and expected life. There were no stock options granted for the three months ended March 31, 2021 and 2020. The restricted stocks are issued to employees and consultants and are held in escrow by the Company until the shares vest on the schedule of 15% after year one, 20% after year two, 25% after year three and 40% after year four, subject to the employees and consultants being a continuing service provider on each of the vesting dates. If the service or employment is terminated, unvested shares revert to the Company. Shares are registered at grant, so share owners may vote at the annual stockholder meeting. Restricted stocks are granted at zero cost basis. Compensation cost of the restricted stocks is recognized on a straight-line basis over the 4-year vesting period. For the three months ended March 31, 2021 and 2020, the Company awarded 285,950 and 287,000 shares of restricted stock, respectively. Due to the existence of restrictions on sale or transfer until the stocks vest, the Company does not count the restricted stocks as issued and outstanding shares until they vest. Total stock-based compensation expense for the three months ended March 31, 2021 and 2020, was $148,772 and $132,065, respectively.

Note 8 - Stock-Based Compensation

3 Months Ended

Mar. 31, 2021

Share-based Payment Arrangement [Abstract]

NOTE 8 — Stock-Based Compensation

The Company recognizes the compensation cost in the financial statements for all stock-based awards to employees, including grants of stock options and restricted stocks, based on the fair value of the awards as of the date that the awards are issued. Compensation cost for stock-based awards is recognized on a straight-line basis over the vesting period.

The fair values of stock options are generally determined using a binomial lattice valuation model which incorporates assumptions about expected volatility, risk-free interest rate, dividend yield, and expected life. There were no stock options granted for the three months ended March 31, 2021 and 2020.

The restricted stocks are issued to employees and consultants and are held in escrow by the Company until the shares vest on the schedule of 15% after year one, 20% after year two, 25% after year three and 40% after year four, subject to the employees and consultants being a continuing service provider on each of the vesting dates. If the service or employment is terminated, unvested shares revert to the Company. Shares are registered at grant, so share owners may vote at the annual stockholder meeting. Restricted stocks are granted at zero cost basis. Compensation cost of the restricted stocks is recognized on a straight-line basis over the 4-year vesting period. For the three months ended March 31, 2021 and 2020, the Company awarded 285,950 and 287,000 shares of restricted stock, respectively. Due to the existence of restrictions on sale or transfer until the stocks vest, the Company does not count the restricted stocks as issued and outstanding shares until they vest.

Total stock-based compensation expense for the three months ended March 31, 2021 and 2020, was $148,772 and $132,065, respectively.