Summary of Significant Accounting Policies (Policies)	9 Months Ended
Summary of Significant Accounting Policies (Policies)	Sep. 30, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Recently Adopted & Not Yet Adopted Accounting Pronouncements	Recent Accounting Pronouncements Not Yet Adopted In February 2016, the Financial Accounting Standards Board ("FASB") issued an accounting standard update ASU 2016-02, "Leases," which requires that lease arrangements longer than 12 months result in an entity recognizing an asset and liability on its balance sheet. ASU 2016-02 is effective for interim and annual periods beginning after December 15, 2018, and early adoption is permitted. This accounting standard update will be effective for the Company on January 1, 2019. For operating leases with terms longer than 12 months, the Company will recognize a lease liability for the obligation to make lease payments and a right-of-use asset for the right to use the underlying asset for the lease term. The Company is currently in the process of evaluating the impact of the adoption on its financial position, results of operations and cash flows. In July 2018, the FASB issued ASU No. 2018-10, "Codification Improvements to Topic 842, Leases" and ASU 2018-11, "Leases (Topic 842): Targeted Improvements." ASU No. 2018-10 made improvements to many aspects of the guidance in ASC 842. ASU 2018-11 made transition requirements less burdensome and provided lessors with a practical expedient for separating nonlease components from lease components. Entities may elect not to recast the comparative periods presented when transitioning to ASC 842. ASU No. 2018-10 has the same effective date and transition requirements as ASC 842. ASU No. 2018-11 has the same effective date as ASC 842 for companies that have not early adopted ASC 842. For companies that have early adopted ASC 842, it is effective upon issuance, but can only be adopted by companies either at the beginning of the company’s first reporting period after issuance or the company’s mandatory ASC 842 effective date. The Company is currently in the process of evaluating the impact of the adoption on its financial position, results of operations and cash flows. In February 2018, the FASB issued Accounting Standards Update No. 2018-02, "Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income," which allows a reclassification from accumulated other comprehensive income to retained earnings for stranded tax effects resulting from the Tax Cuts and Jobs Act, eliminating the stranded tax effects resulting from the Tax Cuts and Jobs Act. However, the new guidance only applies to the tax effects resulting from the Tax Cuts and Jobs Act and does not change the underlying guidance to recognize the effect of a change in tax laws or rates in income from continuing operations. The amendments are effective for all entities for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years, with early adoption permitted. The Company is currently in the process of evaluating the impact of the adoption on its financial position, results of operations and cash flows. In June 2018, the FASB issued ASU 2018-07, "Compensation-Stock Compensation (Topic 718): Improvements to Nonemployee Share-Based Payment Accounting," which simplifies the accounting for share-based payment to nonemployees for goods and services. Under the new standard, most of the guidance on stock compensation payments to nonemployees would be aligned with the requirements for share-based payments granted to employees. This standard is effective for annual reporting periods beginning after December 15, 2018, including interim reporting periods within those annual reporting periods, with early adoption permitted. The Company is currently in the process of evaluating the impact of the adoption on its financial position, results of operations and cash flows. In August 2018, the FASB issued ASU No. 2018-13, "Fair Value Measurement (Topic 820): Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement." Entities will no longer be required to disclose the amount of and reasons for transfers between Level 1 and Level 2 of the fair value hierarchy, but public companies will be required to disclose the range and weighted average used to develop significant unobservable inputs for Level 3 fair value measurements. The guidance also modifies certain disclosure requirements for nonpublic entities to make them less burdensome. ASU No. 2018-13 is effective for all entities for fiscal years beginning after December 15, 2019 and for interim periods within those fiscal years, but entities are permitted to early adopt either the entire standard or only the provisions that eliminate or modify the requirements. The Company is currently in the process of evaluating the impact of the adoption on its financial position, results of operations and cash flows. In August 2018, the FASB issued ASU No. 2018-15, "Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That is a Service Contract." The new guidance required a customer in a cloud computing arrangement that is a service contract to follow the internal-use software guidance in ASC 350-40 to determine which implementation costs to capitalize as assets or expense as incurred. The guidance is effective for calendar-year public business entities in 2020. For all other calendar-year entities, it is effective for annual periods beginning in 2021 and interim periods in 2022. Early adoption is permitted. The Company is currently in the process of evaluating the impact of the adoption on its financial position, results of operations and cash flows. (c) Recently Adopted Accounting Pronouncements In August 2016, the FASB issued ASU No. 2016-15, "Classification of Certain Cash Receipts and Cash Payments," which addresses eight classification issues related to the statement of cash flows. In November 2016, the FASB issued ASU 2016-18, "Statement of Cash Flows: Restricted Cash," which addresses classification and presentation of changes in restricted cash on the statement of cash flows. The standard requires that restricted cash and restricted cash equivalents be included as components of total cash and cash equivalents as presented on the statement of cash flows. The Company adopted ASU 2016-15 and ASU 2016-18 using a retrospective transition method effective January 1, 2018 and applied to the periods presented on the condensed consolidated statements of cash flows. Restricted cash includes cash and cash equivalents that is restricted through legal contracts, regulations or our intention to use the cash for a specific purpose. Our restricted cash primarily relates to refundable deposits and funds held in escrow. In May 2014, the FASB issued ASU 2014-09, "Revenue from Contracts with Customers," which requires an entity to recognize the amount of revenue to which it expects to be entitled for the transfer of promised goods or services to customers. ASU 2014-09 will replace most of the existing revenue recognition guidance in U.S. GAAP when it becomes effective. This new accounting standard is effective for the Company for annual periods in fiscal years beginning after December 15, 2017 (as amended in August 2015 by ASU 2015-14, "Deferral of the Effective Date"). In December 27, 2016, FASB issued ASU 2016-20, "Technical Corrections and Improvements to Topic 606, Revenue from Contracts with Customers," which addresses loan guarantee fees, impairment testing of contract costs, provisions for losses on construction-type and production-type contracts, and various disclosures. ASU 2016-20 will go into effect once ASU 2014-09 takes effect. The Company adopted this standard effective January 1, 2018 using the modified retrospective method, which was only applied to contracts that were not completed as of the adoption date, with a cumulative adjustment to retained earnings.
Revenue Recognition	Revenue Recognition The Company recognizes revenues when control of the promised goods or services is transferred to its customers, in an amount that reflects the consideration the Company expects to be entitled to in exchange for those goods or services. The Company generates revenues primarily by delivering advertising on the Travelzoo website, in the Top 20 email newsletter, in Newsflash and from the Travelzoo Network. The Company also generates transaction-based revenues from the sales of vouchers through our Local Deals and Getaway e-mail alert services and providing hotel bookings. The Company's disaggregated revenues are included in "Note 8: Segment Reporting and Significant Customer Information". For fixed-fee website advertising, the Company recognizes revenues ratably over the contracted placement period. For Top 20 email newsletter and other email products, the Company recognizes revenues when the emails are delivered to its members. The Company offers advertising on a cost-per-click basis, which means that an advertiser pays the Company only when a user clicks on an ad on Travelzoo properties or Travelzoo Network members’ properties. For these customers, the Company recognizes revenues each time a user clicks on the ad. The Company also offers advertising on other bases, such as cost-per-impression, which means that an advertiser pays the Company based on the number of times their advertisement is displayed on Travelzoo properties, email advertisements, Travelzoo Network properties, or social media properties. For these customers, the Company recognizes revenues each time an ad is displayed or email delivered. For transaction based revenues, including products such as Local Deals, Getaway and hotel platform, the Company evaluates whether it is the principal (i.e., report revenue on a gross basis) versus an agent (i.e., report revenue on a net basis). The Company reports transaction revenue on a net basis because the supplier is primarily responsible for providing the underlying service and we do not control the service provided by the supplier prior to its transfer to the customer. For Local Deals and Getaway products, the company earns a fee for acting as an agent for the sale of vouchers that can be redeemed for services with third-party merchants. Revenues are presented net of the amounts due to the third-party merchants for fulfilling the underlying services. Certain merchant contracts allow the Company to retain the proceeds from unredeemed vouchers. With these contracts, the Company estimates the value of vouchers that will ultimately not be redeemed and records the estimate in the same period as the voucher sale. Commission revenue related to our hotel platform is recognized ratably over the period of guest stay, net of an allowance for cancellations based upon historical patterns. For arrangements for booking non-cancelable reservations where the Company’s performance obligation is deemed to be the successful booking of a hotel reservation, we record revenue for the commissions upon completion of the hotel booking. The Company’s contracts with customers may include multiple performance obligations in which the Company allocates revenues to each performance obligation based on its standalone selling price. The Company determines standalone selling price based on its overall pricing objectives, taking into consideration the type of services, geographical region of the customers, normal rate card pricing and customary discounts. Standalone selling price is generally determined based on the prices charged to customers when the product is sold separately. The Company relies upon the following practical expedients and exemptions allowed for in the revenue recognition accounting standard. The Company expenses sales commissions when incurred because the amortization period would have been one year or less. These costs are recorded in sales and marketing expenses. In addition, the Company does not disclose the value of unsatisfied performance obligations for (a) contracts with an original expected length of one year or less and (b) contracts for which it recognizes revenues at the amount to which it has the right to invoice for services performed.