Note 11 - Stockholders' Equity (Details Textual) - USD ($) $ / shares in Units, $ in Thousands					1 Months Ended		12 Months Ended
	Nov. 10, 2022	Aug. 12, 2022	Jun. 24, 2022	Apr. 22, 2022	Dec. 31, 2023	Jul. 31, 2023	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2017	Nov. 30, 2023
Stock Repurchased During Period, Shares (in shares)								0	0
Dividends, Common Stock, Cash							$ 0	$ 0	$ 0
Class Of Warrant Or Right, Issued During Period (in shares)										11,543,814
Proceeds from Warrant Exercises							111,483	0	0
Proceeds from Issuance of Common Stock							$ 0	187,832	$ 0
Common Shares [Member]
Stock Issued During Period, Shares, New Issues (in shares)	3,987,914	4,048,000
Share Price (in dollars per share)	$ 30.25	$ 17.85
Proceeds from Issuance of Common Stock								$ 187,800
Class of Warrant or Right, Redeemed and Canceled (in shares)								8,035,914
New Creditor Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)					$ 0.001		$ 0.001
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)					1		1
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)					81,244		81,244
Series A Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)										$ 57.06
Series B Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)										$ 62.28
Series A and B Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)						1,900,000
Class of Warrant or Right, Outstanding (in shares)						2,000,000
Proceeds from Warrant Exercises						$ 111,500
Class of Warrant or Right, Expired (in shares)						3,100,000
GLF Equity Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)								$ 0.01
Class of Warrant or Right, Outstanding (in shares)					91,436		91,436
Class Of Warrant Or Right, Assumed During Period (in shares)								2,300,000
Class of Warrant or Right, Exercised During Period (in shares)							0
Equity Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)								$ 100
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)								1.1
Class Of Warrant Or Right, Assumed During Period (in shares)								800,000
Warrants Issued to Acquire Swire Pacific Offshore Holdings Ltd. [Member]
Class of Warrant or Right, Issued During Period, Exercise Price (in dollars per share)				$ 0.001				$ 0.001
Share Price (in dollars per share)			$ 21.83	$ 20.08
Adjustments to Additional Paid in Capital, Warrant Issued			$ 176,800
Fair Value Adjustment of Warrants			$ 14,200
Indemnification Agreement, Settlement of Warrants, Value								$ 1,400
Indemification Agreement, Settlement of Warrants (in shares)								64,086
Warrants Issued to Acquire Swire Pacific Offshore Holdings Ltd. [Member] | Swire Pacific Offshore Holdings Ltd. [Member]
Business Acquisition, Equity Interest Issued or Issuable, Number of Shares (in shares)				8,100,000				8,100,000
Share Repurchase Program [Member]
Stock Repurchase Program, Authorized Amount											$ 35,000
Stock Repurchased and Retired During Period, Shares (in shares)					590,499
Stock Repurchased and Retired During Period, Value					$ 35,400
Shares Acquired, Average Cost Per Share (in dollars per share)					$ 59.91