Note 11 - Stock-based and Deferred Compensation (Tables)
|6 Months Ended|
Jun. 30, 2022
|Share-based Payment Arrangement, Activity [Table Text Block]||
|Share-Based Payment Arrangement, Nonvested Award, Cost [Table Text Block]||
Tabular disclosure of cost not yet recognized and weighted-average period over which cost is expected to be recognized for nonvested award under share-based payment arrangement.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef