Note 13 - Segment Information - Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Tour revenues	$ 90,910	$ 15,266	$ 158,756	$ 17,047
Tour revenues, change	75,644		141,709
Operating income (loss)	(19,314)	(32,588)	(53,560)	(63,652)
Operating income (loss), change	$ 13,274		$ 10,092
Operating income (loss), percentage change	41.00%		16.00%
Depreciation and amortization	$ 11,176	8,213	$ 22,354	16,462
Total depreciation and amortization, change	$ 2,963		$ 5,892
Total depreciation and amortization, percentage change	36.00%		36.00%
Total Assets	$ 849,306		$ 849,306		$ 827,491
Total intangibles, net	12,123		12,123		13,235
Total goodwill	42,017		42,017		42,017
Lindblad Segment [Member]
Tour revenues	64,047	6,680	114,321	7,164
Tour revenues, change	57,367		107,157
Operating income (loss)	(19,670)	(31,038)	(53,239)	(58,335)
Operating income (loss), change	$ 11,368		$ 5,096
Operating income (loss), percentage change	37.00%		9.00%
Depreciation and amortization	$ 10,257	7,823	$ 20,998	15,690
Total depreciation and amortization, change	$ 2,434		$ 5,308
Total depreciation and amortization, percentage change	31.00%		34.00%
Total Assets	$ 694,964		$ 694,964		724,873
Total intangibles, net	1,724		1,724		1,874
Total goodwill	0		0		0
Land-experience [Member]
Tour revenues	26,863	8,586	44,435	9,883
Tour revenues, change	18,277		34,552
Operating income (loss)	356	(1,550)	(321)	(5,317)
Operating income (loss), change	1,906		$ 4,996
Operating income (loss), percentage change			94.00%
Depreciation and amortization	919	$ 390	$ 1,356	$ 772
Total depreciation and amortization, change	$ 529		$ 584
Total depreciation and amortization, percentage change	136.00%		76.00%
Total Assets	$ 154,342		$ 154,342		102,618
Total intangibles, net	10,399		10,399		11,361
Total goodwill	$ 42,017		$ 42,017		$ 42,017