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Note 2 - Summary of Significant Accounting Policies - Disaggregation of Revenues by Type (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Lindblad Segment [Member] |  |  |  |
Revenues |  | $ 423,306 | $ 397,410 | $ 278,449
Land-experience [Member] |  |  |  |
Revenues |  | 221,421 | 172,133 | 143,051
Sales Channel, Directly to Consumer [Member] |  |  |  |
Revenues |  |  | 68,700 | 59,000
Guest Ticket [Member] | Lindblad Segment [Member] |  |  |  |
Revenues |  | 373,054 | 345,871 | 240,592
Guest Ticket [Member] | Land-experience [Member] |  |  |  |
Revenues |  | 210,546 | 164,100 | 136,122
Guest Ticket [Member] | Sales Channel, Directly to Consumer [Member] | Lindblad Segment [Member] |  |  |  |
Revenues | [1],[2] | 254,725 | 226,151 | 154,345
Guest Ticket [Member] | Sales Channel, Directly to Consumer [Member] | Land-experience [Member] |  |  |  |
Revenues |  | 184,420 | 143,837 | 115,309
Guest Ticket [Member] | Sales Channel, Agencies [Member] | Lindblad Segment [Member] |  |  |  |
Revenues |  | 92,809 | 90,185 | 66,298
Guest Ticket [Member] | Sales Channel, Agencies [Member] | Land-experience [Member] |  |  |  |
Revenues |  | 22,385 | 17,129 | 17,713
Guest Ticket [Member] | Sales Channel, Affinity [Member] | Lindblad Segment [Member] |  |  |  |
Revenues |  | 25,520 | 29,535 | 19,949
Guest Ticket [Member] | Sales Channel, Affinity [Member] | Land-experience [Member] |  |  |  |
Revenues |  | 3,741 | 3,134 | 3,100
Other Tour [Member] | Lindblad Segment [Member] |  |  |  |
Revenues |  | 50,252 | 51,539 | 37,857
Other Tour [Member] | Land-experience [Member] |  |  |  |
Revenues |  | $ 10,875 | $ 8,033 | $ 6,929
[1] | Under the brand license agreement between the Company and National Geographic, effective January 1, 2024, National Geographic no longer receives commissions on sales bookings through the former National Geographic sales channel as the co-selling arrangement operates as direct sales through the Company’s booking system. For the years ended December 31, 2023 and 2022, the National Geographic sales channel accounted for $68.7 million and $59.0 million, respectively, of the Company’s consolidated guest ticket revenue. In the table above, 2023 and 2022 guest ticket revenues derived through the previous National Geographic sales channel have been classified as direct sales to conform to current period’s presentation.
[2] | Under the brand license agreement between the Company and National Geographic, effective January 1, 2024, National Geographic no longer receives commissions on sales bookings through the former National Geographic sales channel as the co-selling arrangement operates as direct sales through the Company’s booking system. In the three and nine months ended September 30, 2023, the National Geographic sales channel accounted for $18.6 million and $53.2 million, respectively, of the Company’s consolidated guest ticket revenue. In the table above, 2023 guest ticket revenues derived through the previous National Geographic sales channel have been classified as direct sales for comparison purposes.

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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. 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