Note 4 - Debt - Summary of Debt Outstanding (Details) - USD ($) $ in Thousands		Dec. 31, 2025	Jul. 07, 2025	Dec. 31, 2024	Nov. 16, 2021
Long-term debt, gross		$ 670,078		$ 647,887
Long-term debt, gross		670,078		647,887
Debt discount and issuance costs		(15,185)		(10,791)
Less: Current portion of long-term debt		(5,845)		(65,386)
Total long-term debt		$ 649,048		571,710
Nordic Bond 1 [Member]
Interest rate		9.125%
Long-term debt, gross	[1]	$ 650,000
Long-term debt, gross	[1]	650,000
Vessel Facility Agreements [Member]
Long-term debt, gross		20,078		10,387
Long-term debt, gross		$ 20,078		10,387
Secured Debt [Member]
Interest rate					8.50%
Long-term debt, gross	[2]			212,500
Long-term debt, gross	[2]			$ 212,500
Unsecured Debt [Member]
Interest rate		10.375%	10.375%	10.375%
Long-term debt, gross	[3]			$ 250,000
Long-term debt, gross	[3]			$ 250,000
Nordic Bond [Member]
Interest rate			8.50%	8.50%
Long-term debt, gross	[4]			$ 175,000
Long-term debt, gross	[4]			$ 175,000

[1] As of September 30, 2025, the fair value (Level 1) of the 9.125% Senior Secured Notes due July 2030 was $697.1 million. The fair value is obtained from public transaction activity.

[2] As of December 31, 2024, the fair value (Level 3) of the Senior Secured Term Loan was $218.2 million. The Level 3 fair value is derived from discounted present value calculations.

[3] As of December 31, 2024, the fair value (Level 1) of the 10.375% Senior Unsecured Notes due July 2028 was $266.1 million. The fair value is obtained from public transaction activity on the Nordic ABM exchange (XOAM).

[4] As of December 31, 2024, the fair value (Level 1) of the 8.50% Senior Secured Notes due November 2026 was $180.8 million. The fair value is obtained from public transaction activity on the XOAM.