Note 9 - Stockholders' Equity - Summary of Shares to be Issued (Details) - shares |
9 Months Ended | |
|---|---|---|
Sep. 30, 2020 |
Sep. 30, 2019 |
|
| Shares-to-be-issued, outstanding (in shares) | 2,375,762 | 2,470,566 |
| Granted in current period (in shares) | 363,956 | 1,392,460 |
| Issued in current period (in shares) | (387,991) | (1,216,680) |
| Shares-to be issued outstanding (in shares) | 2,351,727 | 2,646,346 |
| X | ||||||||||
- Definition Number of shares granted pursuant to the terms of a deferred compensation arrangement. No definition available.
|
| X | ||||||||||
- Definition The maximum number of shares authorized for issuance under the deferred compensation arrangement as of the balance sheet date. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Number of shares issued pursuant to the terms of a deferred compensation arrangement. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|