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Note 6 - Debt - Schedule of Convertible Debt (Details) - USD ($) $ in Thousands		Sep. 30, 2024	Dec. 31, 2023
Principal amount		$ 164,939
Total unsecured convertible senior notes, net		189,459
Convertible Senior Notes 2026 [Member]
Principal amount		97,862	$ 215,924
Unamortized debt issuance costs		(830)	(2,769)
Total unsecured convertible senior notes, net		97,032	213,155
Fair value of outstanding unsecured convertible senior notes (1)	[1]	$ 66,668	$ 131,444
[1] The fair value is classified as Level 2 liability due to the limited trading activity for the unsecured convertible senior notes. The fair value of the 2026 Notes is determined based on quoted prices in an over-the counter market using the most recent trading information at the end of the reporting period. The value of the conversion feature of the 2026 Notes is not deemed to be significant as the current market price of our common stock is below the initial conversion price of $18.49 per share of common stock.

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Fair value portion of borrowing which can be exchanged for a specified number of another security at the option of the issuer or the holder, for example, but not limited to, the entity's common stock.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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