Note 4 - Fair Value Measurements - Financial Instruments Fair Value (Details) - USD ($) $ in Thousands		Dec. 31, 2022	Dec. 31, 2021
Long-term debt		$ 704,349	$ 97,929
Reported Value Measurement [Member] | Senior Unsecured Notes Due 2024 [Member]
Long-term debt	[1]	225,000	0
Reported Value Measurement [Member] | The 10.625% Senior Notes [Member]
Long-term debt, fair value	[1]	250,000	0
Estimate of Fair Value Measurement [Member] | Senior Unsecured Notes Due 2024 [Member]
Long-term debt	[1]	225,000	0
Estimate of Fair Value Measurement [Member] | The 10.625% Senior Notes [Member]
Long-term debt, fair value	[1]	$ 250,000	$ 0

[1] Fair value is determined using Level 2 inputs. The Company’s senior unsecured notes are quoted, but not actively traded on major exchanges; therefore, fair value is based on periodic values as quoted on major exchanges. See Note 7 for additional information.