Note 9 - Stockholders' Equity - Summary of Shares to be Issued (Details) - shares |
6 Months Ended | |
---|---|---|
Jun. 30, 2021 |
Jun. 30, 2020 |
|
Shares-to-be-issued, outstanding (in shares) | 2,428,329 | 2,375,760 |
Granted in current period (in shares) | 33,238 | 358,482 |
Issued in current period (in shares) | (53,416) | (214,612) |
Shares-to be issued outstanding (in shares) | 2,408,151 | 2,519,630 |