Note 14 - Net Loss Per Share - Schedule Net Loss Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2025	Mar. 31, 2024
Loss from continuing operations	$ (18,185)	$ (16,202)	$ (27,606)	$ (23,394)
Loss from discontinued operations, net of tax	(22,271)	(120,678)	(26,190)	(129,210)
Net loss	$ (40,456)	$ (136,880)	$ (53,796)	$ (152,604)
Weighted average common shares outstanding used in computing basic loss per share (in shares)	45,732	55,440	45,658	56,078
Weighted average common shares outstanding used in computing diluted loss per share (in shares)	45,732	55,440	45,658	56,078
Loss from continuing operations (in dollars per share)	$ (0.4)	$ (0.29)	$ (0.6)	$ (0.42)
Loss from discontinued operations, net of tax (in dollars per share)	(0.49)	(2.18)	(0.57)	(2.3)
Basic net loss per share (in dollars per share)	(0.88)	(2.47)	(1.18)	(2.72)
Loss from continuing operations (in dollars per share)	(0.4)	(0.29)	(0.6)	(0.42)
Loss from discontinued operations, net of tax (in dollars per share)	(0.49)	(2.18)	(0.57)	(2.3)
Diluted net loss per share (in dollars per share)	$ (0.88)	$ (2.47)	$ (1.18)	$ (2.72)