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Summary of Significant Accounting Policies - Narrative (Details) $ in Thousands, ¥ in Millions, member in Millions						1 Months Ended			3 Months Ended			6 Months Ended
	Jun. 16, 2020 USD ($)	Jun. 16, 2020 JPY (¥)	May 05, 2020 USD ($)	Apr. 24, 2020 USD ($)	Jan. 13, 2020 USD ($)	Feb. 29, 2020 USD ($)	Apr. 30, 2019 USD ($)	Apr. 30, 2018 USD ($)	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) member	Jun. 30, 2019 USD ($)	Dec. 31, 2019 USD ($)
Related Party Transaction
Number of members | member												30.0
Goodwill									$ 10,944			$ 10,944		$ 0
Payment to acquire equity method investment												679	$ 0
Interest expense												$ 7
Ownership percentage held by related party									39.50%			39.50%
Impairment of identifiable intangible assets										$ 810
Goodwill impairments										$ 2,100
Deferred revenue														786
Deferred revenue recognized									$ 31			$ 327
Including Holger Proxy
Related Party Transaction
Ownership percentage held by related party									39.90%			39.90%
JFC Travel Group Co.
Related Party Transaction
Number of members | member												1.7
Percentage of ownership before transaction					100.00%
Goodwill					$ 13,054				$ 10,944			$ 10,944		$ 0
Stated interest rate (percentage)					1.60%
Goodwill impairments												2,110
WeekenGO
Related Party Transaction
Equity method purchase price allocation, tangible assets									1,000			1,000
Goodwill									1,500			1,500
Payment to acquire equity method investment						$ 1,700	$ 673	$ 3,000
Equity method investment ownership percentage							26.60%	25.00%
Loss from share of equity loss and intangible asset amortization									106		$ 198	333	409
WeekenGO | Technology related intangible
Related Party Transaction
Equity method purchase price allocation, intangible assets									485			$ 485
Intangible assets, useful life (in years)												3 years
WeekenGO | Equity Method Investee
Related Party Transaction
Insertion order signed to advertise with TravelZoo								$ 2,100
Advertising services purchased									$ 3		$ 239	$ 360	$ 794
Discontinued Operations, Disposed of by Sale | Travelzoo Japan
Related Party Transaction
Term (in years)	3 years	3 years
Interest free loan amount (in JPY)	$ 430	¥ 46.0
Travelzoo Japan
Related Party Transaction
Percentage of ownership before transaction	100.00%	100.00%
Pre-tax loss	$ 128
Travelzoo Japan | Royalty Agreement Terms
Related Party Transaction
Term (in years)	5 years	5 years
Travelzoo Japan | Loan Issued to Travelzoo Japan
Related Party Transaction
Term (in years)	3 years	3 years
Small Business Administration (SBA), CARES Act, Paycheck Protection Program
Related Party Transaction
Amount received under PPP			$ 535	$ 3,100
Stated interest rate (percentage)			1.00%

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