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Summary of Significant Accounting Policies - Narrative (Details) ¥ in Millions, member in Millions			1 Months Ended	3 Months Ended				6 Months Ended			12 Months Ended
	Jun. 16, 2020 USD ($)	Jun. 16, 2020 JPY (¥)	Jan. 31, 2022 USD ($)	Jun. 30, 2022 USD ($)	Mar. 31, 2022 USD ($)	Jun. 30, 2021 USD ($)	Mar. 31, 2021	Jun. 30, 2022 USD ($) member	Jun. 30, 2022 JPY (¥) member	Jun. 30, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2021 USD ($)	Dec. 23, 2020
Related Party Transaction
Number of members | member								30.0	30.0
Proceeds from sale of equity method investments								$ 196,000		$ 0
Other income					$ 1,200,000
Working capital				$ 17,200,000				17,200,000
Cash used in operating activities								16,990,000		(21,950,000)
Merchant payables				47,899,000				47,899,000				$ 68,678,000
Cash and cash equivalents				25,608,000				25,608,000				43,815,000
Deferred revenue				2,100,000				2,100,000				1,300,000
Deferred revenue recognized				329,000				904,000
Voucher liability, current				12,000,000				12,000,000				17,200,000
Customer voucher refund liability				$ 2,900,000				2,900,000				$ 5,200,000
Impairment of intangible assets								0		0
Goodwill impairments								$ 0		0
Board of Directors Chairman
Related Party Transaction
Ownership percentage held by related party				35.70%				35.70%
Brother Of Board Of Directors Chairman
Related Party Transaction
Ownership percentage held by related party				3.90%				3.90%
Travelzoo North America
Related Party Transaction
Deferred revenue				$ 736,000				$ 736,000
Travelzoo Europe
Related Party Transaction
Deferred revenue				1,400,000				1,400,000
Government Assistance, CARES Act
Related Party Transaction
Proceeds from government funding			$ 1,200,000
CANADA
Related Party Transaction
Job retention fund				85,000		$ 149,000		153,000		317,000
Europe
Related Party Transaction
Job retention fund						10,000				31,000
Deferred revenue recognized				5,000				216,000
North America
Related Party Transaction
Deferred revenue recognized				473,000				$ 473,000
Jack’s Flight Club
Related Party Transaction
Number of members | member								1.8	1.8
Goodwill impairments								$ 2,100,000
Weekengo
Related Party Transaction
Equity method investment ownership percentage													33.70%
Proceeds from sale of equity method investments					196,000
Realized gain (loss) on disposal											$ 468,000
Letters of credit outstanding, amount						200,000				200,000
Travelzoo Japan
Related Party Transaction
Royalty recognized						5,000				12,000
Discontinued Operations, Disposed of by Sale | Travelzoo Japan
Related Party Transaction
Term	3 years	3 years
Interest free loan amount	$ 430,000	¥ 46.0						$ 430,000	¥ 46.0
Debt Paid Off					133,000
Royalty recognized				$ 0		$ 9,000				$ 9,000
Travelzoo Japan | Royalty Agreement Terms
Related Party Transaction
Term								5 years	5 years
Travelzoo Japan | Loan Issued to Travelzoo Japan
Related Party Transaction
Term							5 years	3 years	3 years
Trivago | Weekengo
Related Party Transaction
Proceeds from sale of equity method investments					$ 2,900,000

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