Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Tour revenues	$ 64,507	$ 1,019	$ 81,555	$ 81,991
Operating expenses:
Cost of tours	45,600	8,075	73,270	62,988
General and administrative	17,023	9,145	46,123	36,170
Selling and marketing	10,213	2,128	17,680	18,413
Depreciation and amortization	9,323	8,485	25,785	23,728
Total operating expenses	82,159	27,833	162,858	141,299
Operating loss	(17,652)	(26,814)	(81,303)	(59,308)
Other (expense) income:
Interest expense, net	(6,063)	(4,529)	(17,436)	(11,763)
(Loss) gain on foreign currency	(1,434)	989	(1,165)	(6,334)
Other income (expense)	4,357	(74)	4,362	(188)
Total other expense	(3,140)	(3,614)	(14,239)	(18,285)
Loss before income taxes	(20,792)	(30,428)	(95,542)	(77,593)
Income tax expense (benefit)	2,507	(2,893)	(2,648)	(7,664)
Net loss	(23,299)	(27,535)	(92,894)	(69,929)
Net income (loss) attributable to noncontrolling interest	1,039	(156)	(17)	(956)
Net loss attributable to Lindblad Expeditions Holdings, Inc.	(24,338)	(27,379)	(92,877)	(68,973)
Series A redeemable convertible preferred stock dividend	1,340	425	3,962	425
Net loss available to stockholders	$ (25,678)	$ (27,804)	$ (96,839)	$ (69,398)
Weighted average shares outstanding
Basic (in shares)	50,110,188	49,779,525	50,013,191	49,715,663
Diluted (in shares)	50,110,188	49,779,525	50,013,191	49,715,663
Undistributed loss per share available to stockholders:
Basic (in dollars per share)	$ (0.50)	$ (0.56)	$ (1.87)	$ (1.40)
Diluted (in dollars per share)	$ (0.50)	$ (0.56)	$ (1.87)	$ (1.40)