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Note 12 - Convertible Senior Notes - Schedule of Interest Expense (Details) - The 5% Convertible Senior Notes Due 2024 [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Contractual interest expense	$ 364	$ 1,053	$ 1,157	$ 3,161
Amortization of debt issuance costs	220	363	650	1,072
Total interest cost	$ 584	$ 1,416	$ 1,807	$ 4,233
Effective interest rate	1.00%	5.30%	1.00%	5.30%

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Amount of amortization expense attributable to debt issuance costs.

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