Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Tour revenues	$ 343,091	$ 309,734	$ 266,504
Operating expenses:
Cost of tours	166,608	153,743	135,526
General and administrative	62,744	62,898	60,529
Selling and marketing	54,772	46,987	42,354
Depreciation and amortization	25,769	20,768	17,351
Total operating expenses	309,893	284,396	255,760
Operating income	33,198	25,338	10,744
Other (expense) income:
Interest expense, net	(12,288)	(10,830)	(9,736)
Gain (loss) on foreign currency	94	(2,175)	1,144
Other expense	(66)	(165)	(133)
Gain on transfer of assets			454
Total other expense	(12,260)	(13,170)	(8,271)
Income before income taxes	20,938	12,168	2,473
Income tax expense	2,190	616	10,002
Net income (loss)	18,748	11,552	(7,529)
Net income attributable to noncontrolling interest	2,395	200	1,132
Net income (loss) attributable to Lindblad Expeditions Holdings, Inc.	16,353	11,352	(8,661)
Non-cash deemed dividend to warrant holders	2,654
Net income (loss) available to common stockholders	$ 13,699	$ 11,352	$ (8,661)
Weighted average shares outstanding
Basic (in shares)	47,440,788	45,378,188	44,576,912
Diluted (in shares)	49,426,563	46,340,054	44,576,912
Net income (loss) per share available to common stockholders
Basic (in dollars per share)	$ 0.29	$ 0.25	$ (0.19)
Diluted (in dollars per share)	$ 0.28	$ 0.24	$ (0.19)