Note 1 - General and Basis of Presentation - Cash and Restricted Cash and Cash Equivalents (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021
Cash and cash equivalents	$ 414,856	$ 95,872
Restricted cash and cash equivalents	107,466	130,804
Total Cash and cash equivalents and restricted cash and cash equivalents	$ 522,322	$ 226,676	$ 241,133	$ 343,444