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Summary of Significant Accounting Policies - Narrative (Details) $ / shares in Units, supplier in Thousands, ¥ in Millions, shares in Millions, member in Millions				1 Months Ended			3 Months Ended			6 Months Ended			12 Months Ended
	Dec. 30, 2022 USD ($) $ / shares	Dec. 28, 2022 shares	Oct. 31, 2022 USD ($)	May 31, 2023 USD ($)	Jul. 31, 2022 USD ($)	Jan. 31, 2022 USD ($)	Jun. 30, 2023 USD ($)	Jun. 30, 2022 USD ($)	Mar. 31, 2020 USD ($)	Jun. 30, 2023 USD ($) member supplier	Jun. 30, 2023 JPY (¥) member supplier	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Related Party Transaction
Number of members | member										30	30
Number of travel supplier partnerships | supplier										5	5
Working capital							$ 4,300,000			$ 4,300,000
Net cash provided by (used in) operating activities										5,650,000		$ (16,990,000)
Merchant payables							23,885,000			23,885,000			$ 32,574,000
Cash and cash equivalents							19,513,000			19,513,000			18,693,000
Deferred revenue							2,700,000			2,700,000			1,200,000
Deferred revenue recognized										985,000
Voucher liability, current							6,000,000			6,000,000			8,100,000
Customer voucher refund liability							$ 572,000			572,000			1,300,000
Goodwill impairments			$ 0							0
Azzurro Brands Inc.
Related Party Transaction
Interest repaid										$ 285,000
Private Placement
Related Party Transaction
Number of shares sold | shares		3.4
Sale of stock (in dollars per share) | $ / shares	$ 4.45
Sale of stock, total consideration	$ 15,200,000
Sale of stock, cash	1,000,000
Sale of stock, promissory note	$ 4,800,000												$ 4,800,000
Sale of stock, accrued interest	12.00%
Board of Directors Chairman
Related Party Transaction
Ownership percentage held by related party							48.90%			48.90%			50.30%
Brother Of Board Of Directors Chairman
Related Party Transaction
Ownership percentage held by related party							3.40%			3.40%
Travelzoo Europe
Related Party Transaction
Deferred revenue							$ 1,800,000			$ 1,800,000
Travelzoo North America
Related Party Transaction
Deferred revenue							861,000			861,000
Government Assistance, CARES Act
Related Party Transaction
Proceeds from government funding				$ 205,000	$ 494,000	$ 1,200,000
CANADA
Related Party Transaction
Job retention fund								$ 85,000		0		153,000
North America
Related Party Transaction
Deferred revenue recognized										981,000
Europe
Related Party Transaction
Deferred revenue recognized										$ 797,000
Jack’s Flight Club
Related Party Transaction
Number of members | member										2	2
Goodwill impairments									$ 2,100,000				$ 0
Travelzoo Australia
Related Party Transaction
Royalty recognized							9,000	7,000		$ 17,000		12,000
Travelzoo Japan
Related Party Transaction
Royalty recognized							4,000			4,000			$ 0
Discontinued Operations, Disposed of by Sale | Travelzoo Japan
Related Party Transaction
Interest free loan amount										430,000	¥ 46
Debt paid off										113,000				$ 133,000
Travelzoo Japan
Related Party Transaction
Royalty recognized							$ 4,000	$ 0		$ 4,000		$ 0
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

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