Note 10 - Preferred Stock and Common Stock Warrants (Details Textual) - USD ($) $ / shares in Units, $ in Thousands			3 Months Ended		9 Months Ended
	Jul. 26, 2023	Jul. 17, 2023	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Gain (Loss) on Revaluation of Warrants			$ 3,302	$ (2,773)	$ (2,520)	$ (7,192)
Common Stock Warrants [Member]
Gain (Loss) on Revaluation of Warrants			$ 3,300	$ (2,800)	$ (2,500)	(7,200)
Conversion of Preferred Stock into Common Stock [Member]
Conversion of Stock, Shares Issued (in shares)	59,542,066
Series A Convertible Preferred Stock [Member]
Temporary Equity, Shares Outstanding (in shares)			0		0		82,948,000
Temporary Equity, Par or Stated Value Per Share (in dollars per share)							$ 0.0001
Series B Convertible Preferred Stock [Member]
Temporary Equity, Shares Outstanding (in shares)			0		0		79,239,000
Temporary Equity, Par or Stated Value Per Share (in dollars per share)							$ 0.0001
Series C Convertible Preferred Stock [Member]
Temporary Equity, Shares Outstanding (in shares)			0		0		59,366,000
Temporary Equity, Par or Stated Value Per Share (in dollars per share)							$ 0.0001
Convertible Preferred Stock [Member]
Temporary Equity, Dividend Rate Percentage					12.00%
Temporary Equity, Issued Price Per Share (in dollars per share)			$ 1,000		$ 1,000
Dividends, Preferred Stock, Paid-in-kind		$ 7,000			$ 20,500	$ 17,700