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Note 11 - Shareholders' Deficit (Details Textual) $ / shares in Units, $ in Thousands						1 Months Ended		2 Months Ended		3 Months Ended	6 Months Ended
	Jul. 28, 2025 USD ($) $ / shares shares	Jun. 30, 2025 USD ($) $ / shares shares	May 14, 2025 USD ($) $ / shares shares	May 12, 2025 USD ($)	May 14, 2024 USD ($)	Aug. 14, 2025 USD ($) $ / shares shares	Aug. 11, 2025 shares	Jun. 30, 2025 USD ($) $ / shares shares	Jun. 30, 2025 USD ($) $ / shares shares	Mar. 31, 2024 USD ($)	Jun. 30, 2025 USD ($) $ / shares shares	Jun. 30, 2024 USD ($) $ / shares shares	Mar. 01, 2025 USD ($)	Dec. 31, 2024 USD ($)	Nov. 09, 2023 USD ($)	Mar. 01, 2021 USD ($)
Proceeds from Issuance of Common Stock											$ 6,287	$ 0
Stock Repurchased and Retired During Period, Value										$ 11,851
Financial Instruments Subject to Mandatory Redemption, Settlement Terms, Share Value, Amount, Current		$ 7,627						$ 7,627	$ 7,627		$ 7,627			$ 0
Convertible Senior Notes 2026 [Member]
Debt Instrument, Convertible, Threshold Trading Days			20
Debt Instrument, Convertible, Conversion Price | $ / shares		$ 18.4875						$ 18.4875	$ 18.4875		$ 18.4875
Conversion of the 2026 Notes Into Common Stock [Member]
Debt Conversion, Original Debt, Amount			$ 10,000	$ 10,000	$ 10,000
Debt Conversion, Converted Instrument, Shares Issued | shares		539,320	10,000,000					539,320	539,320
Debt Instrument, Convertible, Threshold Trading Days			20
Indefinite Term Share Repurchase Program [Member]
Share Repurchase Program, Authorized, Amount															$ 50,000
Stock Repurchased and Retired During Period, Shares | shares												3,200,000
Stock Repurchased and Retired, Average Price Per Share | $ / shares												$ 3.71
Stock Repurchased and Retired During Period, Value												$ 11,900
Subsequent Event [Member] | Conversion of the 2026 Notes Into Common Stock [Member]
Debt Conversion, Converted Instrument, Shares Issued | shares						1,996,555	1,996,555
Minimum [Member] | Convertible Senior Notes 2026 [Member]
Debt Instrument, Convertible, Conversion Price | $ / shares			$ 2.5
At the Market Equity Offering Program [Member]
Equity Offering Facility, Maximum Aggregate Offering Amount													$ 150,000			$ 150,000
Stock Issued During Period, Shares, New Issues | shares											1,400,000
Proceeds from Issuance of Common Stock						$ 2,100					$ 6,400
At the Market Equity Offering Program [Member] | Subsequent Event [Member]
Stock Issued During Period, Shares, New Issues | shares						700,000
Proceeds from Issuance of Common Stock						$ 2,100
Shares Issued, Price Per Share | $ / shares						$ 3.14
At the Market Equity Offering Program [Member] | Weighted Average [Member]
Shares Issued, Price Per Share | $ / shares		$ 4.55						$ 4.55	$ 4.55		$ 4.55
Securities Purchase Agreement With Polar Asset Management [Member] | Subsequent Event [Member]
Stock Issued During Period, Shares, New Issues | shares	5,365,853
Proceeds from Issuance of Common Stock	$ 20,600
Shares Issued, Price Per Share | $ / shares	$ 4.1
Shares Issued, Premium Over Stock Price, Percentage	14.00%

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