Note 15 - Income Taxes - Summary of Operating Loss Carryforwards (Details) $ in Thousands	Dec. 31, 2022 USD ($)
Net operating loss	$ 644,200
Tax Year 2009 [Member]
Net operating loss	406,477
Tax Year 2010 [Member]
Net operating loss	92,058
Tax Year 2011 [Member]
Net operating loss	39,865
Tax Year 2012 [Member]
Net operating loss	30,884
Tax Year 2013 [Member]
Net operating loss	30,779
Tax Year 2014 [Member]
Net operating loss	7,245
Tax Year 2016 [Member]
Net operating loss	16,006
Tax Year 2017 [Member]
Net operating loss	$ 20,848