Note 3 - Revenues - Disaggregation of Revenues by Type (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Lindblad Segment [Member]
Revenues	$ 152,489	$ 131,108
Land-experience [Member]
Revenues	55,524	48,613
Guest Ticket [Member] \| Lindblad Segment [Member]
Revenues	124,184	112,649
Guest Ticket [Member] \| Land-experience [Member]
Revenues	50,937	45,676
Guest Ticket [Member] \| Sales Channel, Directly to Consumer [Member] \| Lindblad Segment [Member]
Revenues	84,316	78,854
Guest Ticket [Member] \| Sales Channel, Directly to Consumer [Member] \| Land-experience [Member]
Revenues	45,437	41,672
Guest Ticket [Member] \| Sales Channel, Agencies [Member] \| Lindblad Segment [Member]
Revenues	39,868	33,795
Guest Ticket [Member] \| Sales Channel, Agencies [Member] \| Land-experience [Member]
Revenues	5,500	4,004
Other Tour [Member] \| Lindblad Segment [Member]
Revenues	28,305	18,459
Other Tour [Member] \| Land-experience [Member]
Revenues	$ 4,587	$ 2,937

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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+ Details