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Note 5 - Stockholders' Equity and Dilutive Equity Instruments (Details Textual) - USD ($) $ / shares in Units, $ in Thousands			1 Months Ended	9 Months Ended		12 Months Ended
	Aug. 06, 2024	May 02, 2024	Jul. 31, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023	Feb. 29, 2024	Nov. 30, 2023
Proceeds from Warrant Exercises				$ 0	$ 111,483
Share Repurchase Program [Member]
Share Repurchase Program, Authorized, Amount	$ 80,600						$ 48,600	$ 35,000
Stock Repurchased and Retired During Period, Shares (in shares)				520,082		590,499
Stock Repurchased and Retired During Period, Value				$ 46,600		$ 35,000
Shares Acquired, Average Cost Per Share (in dollars per share)				$ 89,650,000		$ 59.29
Share Repurchase Program, Excise Tax, Percent				1.00%		1.00%
Share Repurchase Program, Increase in Authorized Amount	$ 13,900	$ 18,100
Out-of-the-money Warrants [Member]
Class of Warrant or Right, Outstanding (in shares)				782,993
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)				861,292
New Creditor Warrants [Member]
Class of Warrant or Right, Number of Securities Called by Each Warrant or Right (in shares)				1
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)				$ 0.001	$ 0.001
GLF Equity Warrants [Member]
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)				$ 100
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, Outstanding (in shares)			2,000,000
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)			1,900,000
Proceeds from Warrant Exercises			$ 111,500
Class of Warrant or Right, Expired (in shares)			3,100,000

X

- Definition

Amount authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 505
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
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-Topic 505
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-Section 50
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