Segment Reporting and Significant Customer Information - Operating Results from Continuing Operations and Assets by Business Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Revenues from External Customers and Long-Lived Assets
Total revenues	$ 21,985	$ 21,601
Operating profit (loss)	5,591	4,711
Travelzoo North America
Revenues from External Customers and Long-Lived Assets
Total revenues	14,228	14,758
Operating profit (loss)	4,438	4,516
Travelzoo Europe
Revenues from External Customers and Long-Lived Assets
Total revenues	6,662	5,887
Operating profit (loss)	1,382	457
Jack’s Flight Club
Revenues from External Customers and Long-Lived Assets
Total revenues	1,063	948
Operating profit (loss)	(99)	(45)
New Initiatives
Revenues from External Customers and Long-Lived Assets
Total revenues	32	8
Operating profit (loss)	(130)	(217)
Operating Segments | Travelzoo North America
Revenues from External Customers and Long-Lived Assets
Total revenues	14,273	14,567
Operating Segments | Travelzoo Europe
Revenues from External Customers and Long-Lived Assets
Total revenues	6,580	6,078
Operating Segments | Jack’s Flight Club
Revenues from External Customers and Long-Lived Assets
Total revenues	1,100	948
Operating Segments | New Initiatives
Revenues from External Customers and Long-Lived Assets
Total revenues	32	8
Intersegment revenues
Revenues from External Customers and Long-Lived Assets
Total revenues	0	0
Intersegment revenues | Travelzoo North America
Revenues from External Customers and Long-Lived Assets
Total revenues	(45)	191
Intersegment revenues | Travelzoo Europe
Revenues from External Customers and Long-Lived Assets
Total revenues	82	(191)
Intersegment revenues | Jack’s Flight Club
Revenues from External Customers and Long-Lived Assets
Total revenues	(37)	0
Intersegment revenues | New Initiatives
Revenues from External Customers and Long-Lived Assets
Total revenues	$ 0	$ 0