Note 15 - Income Taxes - Summary of Operating Loss Carryforwards (Details) $ in Thousands	Dec. 31, 2021 USD ($)
2007	$ 824,400
Tax Year 2007 [Member]
2007	35,890
Tax Year 2008 [Member]
2007	53,895
Tax Year 2009 [Member]
2007	496,889
Tax Year 2010 [Member]
2007	92,058
Tax Year 2011 [Member]
2007	39,865
Tax Year 2012 [Member]
2007	30,884
Tax Year 2013 [Member]
2007	30,779
Tax Year 2014 [Member]
2007	7,245
Tax Year 2016 [Member]
2007	16,006
Tax Year 2017 [Member]
2007	$ 20,848