Note 9 - Commitments and Contingencies - Supplemental Balance Sheet Information (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Operating Lease, Right-of-Use Asset	$ 3,616	$ 5,165
Operating Lease and Finance Lease, Right of Use Assets	31,344	5,165
Operating Lease, Liability, Current	1,312	1,510
Finance Lease, Liability, Current	1,998	0
Operating Lease, Liability, Noncurrent	2,591	4,200
Finance Lease, Liability, Noncurrent	26,080	0
Total lease liabilities	31,981	$ 5,710
Property, Plant, and Equipment, Net [Member]
Finance Lease, Right-of-Use Asset, after Accumulated Amortization	$ 27,728