Note 16 - Failure to Comply with NASDAQ Listing Requirements	3 Months Ended
Mar. 31, 2022
Notes to Financial Statements
Failure to Comply with Nasdaq Listing Requirements Disclosure [Text Block]	*NOTE 16.* FAILURE TO COMPLY WITH NASDAQ LISTING REQUIREMENTS** On September 15, 2021, we received a notification letter from The Nasdaq Stock Market LLC (Nasdaq) indicating that we have failed to comply with the minimum bid price requirement of Nasdaq Listing Rule 5550(a)(2). Nasdaq Listing Rule 5550(a)(2) requires that companies listed on the Nasdaq Capital Market maintain a minimum bid price of $1.00. To regain compliance with this listing rule, the closing bid price of our common stock has to be at least $1.00 for a period of Nasdaq's discretion, of at least 10, but not to exceed 20, consecutive business days. As of the date of this filing, we have not regained compliance with the minimum bid price requirement, however, we obtained from Nasdaq an additional 180-day compliance period, which extends through September 12, 2022. We are committed to taking actions that would enable us to regain compliance, including, if necessary, completing a reverse split of our common stock to increase its share price above the $1.00 minimum bid price.

Note 16 - Failure to Comply with NASDAQ Listing Requirements

3 Months Ended

Mar. 31, 2022

Failure to Comply with Nasdaq Listing Requirements Disclosure [Text Block]

NOTE 16. FAILURE TO COMPLY WITH NASDAQ LISTING REQUIREMENTS

On September 15, 2021, we received a notification letter from The Nasdaq Stock Market LLC (Nasdaq) indicating that we have failed to comply with the minimum bid price requirement of Nasdaq Listing Rule 5550(a)(2). Nasdaq Listing Rule 5550(a)(2) requires that companies listed on the Nasdaq Capital Market maintain a minimum bid price of $1.00. To regain compliance with this listing rule, the closing bid price of our common stock has to be at least $1.00 for a period of Nasdaq's discretion, of at least 10, but not to exceed 20, consecutive business days. As of the date of this filing, we have not regained compliance with the minimum bid price requirement, however, we obtained from Nasdaq an additional 180-day compliance period, which extends through September 12, 2022. We are committed to taking actions that would enable us to regain compliance, including, if necessary, completing a reverse split of our common stock to increase its share price above the $1.00 minimum bid price.