Note 22 - Subsequent Events	12 Months Ended
Dec. 31, 2021
Notes to Financial Statements
Subsequent Events [Text Block]	*NOTE 22.* SUBSEQUENT EVENTS** On January 19, 2022, the Company amended the lease for its corporate headquarters located in Emeryville, California to extend the term through July 31, 2027. On January 31, 2022, the Company’s stockholders approved an amendment to the Company’s Amended and Restated Certificate of Incorporation, as amended, to increase the number of authorized shares of the Company’s common stock from 100,000,000 to 150,000,000 (the “Amendment”). The Amendment became effective upon the Company’s filing of the Amendment with the Secretary of State of Delaware on January 31, 2022. In February 2022, the Russian Federation and Belarus commenced a military action with the country of Ukraine. As a result of this action, various nations, including the United States, have instituted economic sanctions against the Russian Federation and Belarus. Further, the impact of this action and related sanctions on the world economy are not determinable as of the date of these financial statements. Although the Company does not have significant customers, suppliers or operations within the affected geographies, the specific impact on the Company's financial condition, results of operations, and cash flows is also not determinable as of the date of these financial statements.

Note 22 - Subsequent Events

12 Months Ended

Dec. 31, 2021

NOTE 22. SUBSEQUENT EVENTS

On January 19, 2022, the Company amended the lease for its corporate headquarters located in Emeryville, California to extend the term through July 31, 2027.

On January 31, 2022, the Company’s stockholders approved an amendment to the Company’s Amended and Restated Certificate of Incorporation, as amended, to increase the number of authorized shares of the Company’s common stock from 100,000,000 to 150,000,000 (the “Amendment”). The Amendment became effective upon the Company’s filing of the Amendment with the Secretary of State of Delaware on January 31, 2022.

In February 2022, the Russian Federation and Belarus commenced a military action with the country of Ukraine. As a result of this action, various nations, including the United States, have instituted economic sanctions against the Russian Federation and Belarus. Further, the impact of this action and related sanctions on the world economy are not determinable as of the date of these financial statements. Although the Company does not have significant customers, suppliers or operations within the affected geographies, the specific impact on the Company's financial condition, results of operations, and cash flows is also not determinable as of the date of these financial statements.