Quarterly report pursuant to Section 13 or 15(d)

Note 13 - Income Taxes (Details Textual)

v3.22.2.2
Note 13 - Income Taxes (Details Textual) - USD ($)
$ in Thousands
Jun. 30, 2022
Dec. 31, 2021
Unrecognized Tax Benefits, Ending Balance $ 0 $ 0
Operating Loss Carryforwards   $ 164,000
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member]    
Operating Loss Carryforwards 164,100  
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member] | Research Tax Credit Carryforward [Member]    
Tax Credit Carryforward, Amount 9,100  
State and Local Jurisdiction [Member]    
Operating Loss Carryforwards $ 20,100