Note 8 - Capital Stock - Issuance of Common Stock (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended						12 Months Ended
		Mar. 31, 2026		Dec. 31, 2025	Sep. 30, 2025	Jun. 30, 2025	Mar. 31, 2025	Dec. 31, 2025
Issuance of common stock pursuant to public offerings, net (in shares)		14,558,681						100,429,631
Issuance of common stock pursuant to public offerings, net		$ 107,767	[1]				$ 205,424	$ 741,423	[1]
At the Market Offering Program [Member]
Price per share (in dollars per share)	[3],[4]	$ 7.4	[2]	$ 7.24	$ 7.03	$ 7.01	$ 8.17	$ 7.24
Issuance of common stock pursuant to public offerings, net (in shares)	[3]	14,558,681		33,738,722	21,664,659	19,884,204	25,142,046
Issuance of common stock pursuant to public offerings, net	[1],[3]	$ 107,767		$ 244,238	$ 152,345	$ 139,416	$ 205,424

[1] Net proceeds are net of the underwriters’ discount, if applicable, and other offering costs.

[2] As of December 31, 2025, the Company had entered into twelve equity distribution agreements, eleven of which have either been terminated because all shares were sold or were replaced with a subsequent agreement.

[3] The Company has entered into 14 equity distribution agreements, 13 of which have either been terminated because all shares were sold or were replaced with a subsequent agreement.

[4] Weighted average price received per share is after deducting the underwriters’ discount, if applicable, and other offering costs.