Note 12 - Segment Information - Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Tour revenues	$ 143,395	$ 67,846
Operating income (loss)	12,466	(34,245)
Depreciation and amortization	11,808	11,178
Total Assets	774,268		$ 787,975
Total intangibles, net	10,760		11,219
Total goodwill	42,017		42,017
Lindblad Segment [Member]
Tour revenues	115,498	50,274
Operating income (loss)	12,118	(33,569)
Depreciation and amortization	11,152	10,741
Total Assets	628,968		662,683
Total intangibles, net	1,651		1,680
Total goodwill	0		0
Land-experience [Member]
Tour revenues	27,897	17,572
Operating income (loss)	348	(676)
Depreciation and amortization	656	$ 437
Total Assets	145,300		125,292
Total intangibles, net	9,109		9,539
Total goodwill	$ 42,017		$ 42,017