XML 92 R76.htm IDEA: XBRL DOCUMENT v3.20.4
Note 8 - Income Taxes (Details Textual) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Deferred Tax Assets, Valuation Allowance, Total $ 50,548 $ 41,281
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount 9,200  
Unrecognized Tax Benefits, Decrease Resulting from Settlements with Taxing Authorities 2,500  
Unrecognized Tax Benefits that Would Impact Effective Tax Rate 2,000  
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total 0 $ 1,100
Domestic Tax Authority [Member]    
Tax Credit Carryforward, Amount 15,600  
Operating Loss Carryforwards, Total $ 559,800  
Open Tax Year 2011 2012 2013  
State and Local Jurisdiction [Member]    
Operating Loss Carryforwards, Total $ 1,088,500  
Open Tax Year 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020