Note 16 - Selected Quarterly Financial Data (Unaudited)
|12 Months Ended|
Dec. 31, 2020
|Notes to Financial Statements|
|Quarterly Financial Information [Text Block]||
Selected financial data (unaudited) for the periods presented was as follows:
The entire disclosure for quarterly financial data. Includes, but is not limited to, tabular presentation of financial information for fiscal quarters, effect of year-end adjustments, and an explanation of matters or transactions that affect comparability of the information.
Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef