Note 11 - Earnings Per Share (Details Textual) - shares  | 
3 Months Ended | |
|---|---|---|
Mar. 31, 2022  | 
Mar. 31, 2021  | 
|
| Weighted Average Number of Shares Outstanding, Diluted, Adjustment, Total (in shares) | 0 | |
| Common Stock, Shares, Outstanding, Ending Balance (in shares) | 5,397,959 | 0 | 
| X | ||||||||||
- Definition Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef 
  | 
| X | ||||||||||
- Definition The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
  |