Note 5 - Stock-Based Compensation - Weighted Average Period for Recognition of Unrecognized Compensation Cost for Stock Options and Restricted Stock (Details) |
6 Months Ended |
---|---|
Jun. 30, 2023 | |
Restricted Stock [Member] | |
Weighted average period (in years) (Year) | 1 year 14 days |
Restricted Stock Units (RSUs) [Member] | |
Weighted average period (in years) (Year) | 1 year 8 months 26 days |
Performance Shares [Member] | |
Weighted average period (in years) (Year) | 2 years 1 month 20 days |