Segment Reporting and Significant Customer Information - Revenue by Type and 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
Travelzoo North America
Revenues from External Customers and Long-Lived Assets
Total revenues	14,228	14,758
Advertising | Travelzoo North America
Revenues from External Customers and Long-Lived Assets
Total revenues	20,850	20,645
Membership Fees | Travelzoo North America
Revenues from External Customers and Long-Lived Assets
Total revenues	1,104	948
Other | Travelzoo North America
Revenues from External Customers and Long-Lived Assets
Total revenues	$ 31	$ 8