Note 3 - Revenues - Disaggregation of Revenues by Type (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2025	Mar. 31, 2024
Lindblad Segment [Member]
Revenues		$ 131,108	$ 118,303
Land-experience [Member]
Revenues		48,613	35,311
Guest Ticket [Member] | Lindblad Segment [Member]
Revenues		112,649	103,017
Guest Ticket [Member] | Land-experience [Member]
Revenues		45,676	33,060
Guest Ticket [Member] | Sales Channel, Directly to Consumer [Member] | Lindblad Segment [Member]
Revenues	[1]	78,854	72,484
Guest Ticket [Member] | Sales Channel, Directly to Consumer [Member] | Land-experience [Member]
Revenues	[1]	41,672	30,173
Guest Ticket [Member] | Sales Channel, Agencies [Member] | Lindblad Segment [Member]
Revenues		33,795	30,533
Guest Ticket [Member] | Sales Channel, Agencies [Member] | Land-experience [Member]
Revenues		4,004	2,887
Other Tour [Member] | Lindblad Segment [Member]
Revenues		18,459	15,286
Other Tour [Member] | Land-experience [Member]
Revenues		$ 2,937	$ 2,251

[1] Direct bookings in the table above are inclusive of affinity group sales. During the three months ended March 31, 2024, affinity sales were $6.4 million and $0.4 million for Lindblad segment and Land Experiences segment, respectively.