SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	6 Months Ended
Jun. 30, 2018
Accounting Policies [Abstract]
Basis of Accounting	We prepared the accompanying unaudited Condensed Consolidated Balance Sheet as of June 30, 2018, with the audited Consolidated Balance Sheet amounts as of December 31, 2017 presented for comparative purposes, and the related unaudited Condensed Consolidated Statements of Operations and Statements of Cash Flows in accordance with the instructions for Form 10-Q. In compliance with those instructions, we have omitted certain information and footnote disclosures normally included in annual consolidated financial statements prepared in accordance with U.S. generally accepted accounting principles (“GAAP”), though management believes the disclosures made herein are sufficient to ensure that the information presented is not misleading. Our results of operations and our cash flows as of the end of the interim periods reported herein do not necessarily indicate the results we may experience for the remainder of the year or for any other future period. Management believes that we have included all adjustments (including those of a normal, recurring nature) considered necessary to fairly present our unaudited Condensed Consolidated Balance Sheet as of June 30, 2018, our unaudited Condensed Consolidated Statements of Operations and our unaudited Condensed Consolidated Statements of Cash Flows for all periods presented. You should read our unaudited condensed consolidated interim financial statements and footnotes in conjunction with our consolidated financial statements and footnotes included within the Annual Report on Form 10-K (the “2017 Form 10-K”).
Consolidation	Consolidation We include all of our subsidiaries, which include the VIEs for which we are the primary beneficiary, in our consolidated financial statements, eliminating all significant intercompany balances and transactions during consolidation. To comply with China’s laws which restrict foreign ownership of entities that operate within industries deemed sensitive by the Chinese government, we employ what we believe is a commonly-used organizational structure consisting of a wholly-foreign owned enterprise (“WFOE”) and the VIEs to operate our KanKan business. We own 100% of the equity of the WFOE, while the VIEs are companies formed in China under local laws which are owned by members of our management team. We funded the registered capital and operating expenses of the VIEs by extending loans to the VIEs’ owners. We are the primary beneficiary of the VIEs because the relationships between the VIEs and our WFOE are governed by contractual agreements, including in each case an Exclusive Call Option Agreement, an Exclusive Business Cooperation Agreement, a Proxy Agreement and an Equity Pledge Agreement, which give us control over the operations of the VIEs.
Use of Estimates	Use of Estimates We prepare our consolidated financial statements in conformity with GAAP. While preparing our financial statements, we make estimates and assumptions that affect amounts reported and disclosed in the consolidated financial statements and accompanying notes. Accordingly, actual results could differ from those estimates. On an ongoing basis, we evaluate our estimates, including those related to accounts receivable, intangible assets, the useful lives of property and equipment, stock-based compensation, the fair value of the warrant liability, income taxes, inventory reserve and purchase price allocation, among other items.
Changes to Significant Accounting Policies - Revenue Recognition	Changes to Significant Accounting Policies - Revenue Recognition On January 1, 2018, we adopted Accounting Standards Update (“ASU”) 2014-09, Revenue from Contracts with Customers, and all subsequent amendments (collectively “ASC 606”) using the modified retrospective method. We recognized the cumulative effect of initially applying the new revenue standard as an adjustment to the opening balance of Accumulated deficit (the amount was not material). We have not retrospectively adjusted the information for the comparative period reported herein, which information we continue to report under the accounting standards in effect for that period. The amounts of revenue, accounts receivable and contract balances that we reported under ASC 606 as of and for the three and six months ended June 30, 2018, were not materially different than the amounts we would have reported under the accounting standards previously in effect. We recognize revenue when we transfer control of the promised goods or services to our customers, and we recognize an amount that reflects the consideration to which we expect to be entitled in exchange for those goods or services. When customers pay us prior to when we satisfy our obligation to transfer control of promised goods or services, we record the amount that reflects the consideration to which we expect to be entitled as a contract liability until such time as we satisfy our performance obligation. As a result of our adoption of ASC 606, the line item previously labeled “Deferred revenue” on our condensed consolidated balance sheets is now labeled “Contract liability”; the comparative period balance as reported herein did not change as a result of our application of the modified retrospective transition approach. For our contracts with customers, we only extend short-term credit policies to our customers, generally of 90 days or less. We record the incremental costs of obtaining contracts as an expense when incurred, because such costs would otherwise be amortized over a period of less than one year if capitalized. Transaction Services Our Travel & Entertainment segment generates our transaction services revenue, primarily using an agency model. To a lesser extent, we use a merchant model when we directly provide tour services to customers. Under the agency model, various service providers with whom we maintain relationships are ultimately responsible for delivering the underlying services for which our customers transact, such as lodging, air travel, entertainment, or tours. Our obligation to our customers is to arrange for these service providers to provide the underlying services, and we satisfy our obligation at the point in time that these service providers begin to provide the underlying service (e.g., upon the check-in date for lodging stays, upon the show/performance date for entertainment transactions, etc.). We recognize revenue from transactions under this model on a net basis (i.e., the amount charged to our customers less the amounts we pay to the service providers). Under the merchant model, we provide tour services directly to our customers. Our obligation to provide the tour services is satisfied at the point in time that we finish providing the tour. For transactions occurring under this model, we recognize revenue on a gross basis. Under either model, our customers pay at the time the original transaction occurs via our sales channels, primarily the Vegas.com website and mobile application. Because the original transaction date almost always precedes the date that our performance obligation is satisfied, we record a contract liability for the amount of consideration received. In general, we satisfy most of our performance obligations within approximately three to four months from the original transaction date, and substantially all performance obligations are satisfied within one year from the original transaction date. Data Platform Services Our KanKan business generates our data platform services revenue. Our financial product uses our proprietary data intelligence software to screen potential loan candidates and provide only high-quality loan candidates to affiliates of banks and other lending institutions in China. We earn a commission for our service and we recognize that commission at the point in time at which a loan is issued by the lending institutions to a loan candidate provided by us in an amount we determine by multiplying the commission rate specified in our contracts with the affiliates of the banks and other lending institutions by the amount of such loans issued to loan candidates we have provided. Per our contracts with the affiliates of the banks and other lending institutions, we may be required to reimburse the affiliates of such lending institutions for a certain percentage of any loan defaults. We have determined that the portion of such contracts potentially requiring us to reimburse our customers represents a guarantee, the accounting for which is not within the scope of ASC 606. As a result, we account for such guarantee using other GAAP and record an initial liability equal to the total potential amount that we could be required to reimburse upon default, which approximates fair value. We initially record the liability in Accrued expense and other current liabilities in our consolidated balance sheets. As we are released from our obligation to perform under the guarantee, we record the amount of reduction in the guarantee liability as data platform services revenue. We have not yet recorded material amounts of revenue resulting from being released from our guarantee obligation. We also generate revenue by creating and delivering integrated artificial-intelligence-based solutions for clients. Under this type of contract, we provide a single, continuous service to clients who control the assets as we create them. Accordingly, we recognize the revenue over the period of time during which we provide the service. Advertising and Other Our Travel & Entertainment segment generates the majority of our advertising revenue, and we report the remaining amount of advertising revenue in Corporate Entity and Other in our segment information. We primarily generate advertising revenue from the use of sponsored links and display advertising placed directly on our website pages. Substantially all of our advertising contracts with customers are completed within one year or less. In click-through advertising contracts with customers, our obligation is to place our customers’ interactive ads on our websites for a specified period of time. We recognize revenue from click-through advertising at the point in time at which visitors to our websites click through the ads to our advertising customers’ websites. Any variability regarding contract consideration is resolved within the reporting period. Some of our advertising contracts with customers require us to place our advertising customers’ static display ads on our websites for a specified period of time or in a specific location on our websites, or both. We recognize revenue from such advertising placement arrangements either over time (ratably over the contract term) or based upon the delivery of advertising impressions, depending upon the terms of the contract. We also generate revenue from other sources, such as from e-commerce activity in which we sell goods to our customers, or media production which involves us producing video or Internet-based content for our customers. We recognize the revenue from these contracts at the point in time when we transfer control of the good sold to the customer or when we deliver the promised media content.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements In February 2016, the Financial Accounting Standards Board issued ASU 2016-02, Leases (Topic 842), which changes GAAP primarily by requiring lessees to recognize, at lease commencement, a lease liability representing the present value of the lessee’s obligation to make lease payments, and a right-of-use asset representing the lessee’s right to use (or control the use of) a specified asset during the lease term, for leases classified as operating leases. For us, the amendments in ASU 2016-02 will become effective on January 1, 2019, and early adoption is permitted. We are currently evaluating the impact that application of ASU 2016-02 will have on our consolidated financial statements, results of operations and cash flows; however, we expect the impact to be material, as we will be recording assets and liabilities related to most of our leases, including our leases for office space, which we currently account for as operating leases. We have reviewed all recently issued accounting pronouncements. The pronouncements that we have already adopted did not have a material effect on our financial condition, results of operations, cash flows or reporting thereof, and except as otherwise noted above, we do not believe that any of the pronouncements that we have not yet adopted will have a material effect upon our financial condition, results of operations, cash flows or reporting thereof.

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)

6 Months Ended

Jun. 30, 2018

We prepared the accompanying unaudited Condensed Consolidated Balance Sheet as of June 30, 2018, with the audited Consolidated Balance Sheet amounts as of December 31, 2017 presented for comparative purposes, and the related unaudited Condensed Consolidated Statements of Operations and Statements of Cash Flows in accordance with the instructions for Form 10-Q. In compliance with those instructions, we have omitted certain information and footnote disclosures normally included in annual consolidated financial statements prepared in accordance with U.S. generally accepted accounting principles (“GAAP”), though management believes the disclosures made herein are sufficient to ensure that the information presented is not misleading.

Our results of operations and our cash flows as of the end of the interim periods reported herein do not necessarily indicate the results we may experience for the remainder of the year or for any other future period.

Management believes that we have included all adjustments (including those of a normal, recurring nature) considered necessary to fairly present our unaudited Condensed Consolidated Balance Sheet as of June 30, 2018, our unaudited Condensed Consolidated Statements of Operations and our unaudited Condensed Consolidated Statements of Cash Flows for all periods presented. You should read our unaudited condensed consolidated interim financial statements and footnotes in conjunction with our consolidated financial statements and footnotes included within the Annual Report on Form 10-K (the “2017 Form 10-K”).

Consolidation

We include all of our subsidiaries, which include the VIEs for which we are the primary beneficiary, in our consolidated financial statements, eliminating all significant intercompany balances and transactions during consolidation.

To comply with China’s laws which restrict foreign ownership of entities that operate within industries deemed sensitive by the Chinese government, we employ what we believe is a commonly-used organizational structure consisting of a wholly-foreign owned enterprise (“WFOE”) and the VIEs to operate our KanKan business. We own 100% of the equity of the WFOE, while the VIEs are companies formed in China under local laws which are owned by members of our management team. We funded the registered capital and operating expenses of the VIEs by extending loans to the VIEs’ owners. We are the primary beneficiary of the VIEs because the relationships between the VIEs and our WFOE are governed by contractual agreements, including in each case an Exclusive Call Option Agreement, an Exclusive Business Cooperation Agreement, a Proxy Agreement and an Equity Pledge Agreement, which give us control over the operations of the VIEs.

Use of Estimates

We prepare our consolidated financial statements in conformity with GAAP. While preparing our financial statements, we make estimates and assumptions that affect amounts reported and disclosed in the consolidated financial statements and accompanying notes. Accordingly, actual results could differ from those estimates. On an ongoing basis, we evaluate our estimates, including those related to accounts receivable, intangible assets, the useful lives of property and equipment, stock-based compensation, the fair value of the warrant liability, income taxes, inventory reserve and purchase price allocation, among other items.

Changes to Significant Accounting Policies - Revenue Recognition

On January 1, 2018, we adopted Accounting Standards Update (“ASU”) 2014-09, Revenue from Contracts with Customers, and all subsequent amendments (collectively “ASC 606”) using the modified retrospective method. We recognized the cumulative effect of initially applying the new revenue standard as an adjustment to the opening balance of Accumulated deficit (the amount was not material). We have not retrospectively adjusted the information for the comparative period reported herein, which information we continue to report under the accounting standards in effect for that period. The amounts of revenue, accounts receivable and contract balances that we reported under ASC 606 as of and for the three and six months ended June 30, 2018, were not materially different than the amounts we would have reported under the accounting standards previously in effect.

We recognize revenue when we transfer control of the promised goods or services to our customers, and we recognize an amount that reflects the consideration to which we expect to be entitled in exchange for those goods or services.

When customers pay us prior to when we satisfy our obligation to transfer control of promised goods or services, we record the amount that reflects the consideration to which we expect to be entitled as a contract liability until such time as we satisfy our performance obligation. As a result of our adoption of ASC 606, the line item previously labeled “Deferred revenue” on our condensed consolidated balance sheets is now labeled “Contract liability”; the comparative period balance as reported herein did not change as a result of our application of the modified retrospective transition approach.

For our contracts with customers, we only extend short-term credit policies to our customers, generally of 90 days or less.

We record the incremental costs of obtaining contracts as an expense when incurred, because such costs would otherwise be amortized over a period of less than one year if capitalized.

Transaction Services

Our Travel & Entertainment segment generates our transaction services revenue, primarily using an agency model. To a lesser extent, we use a merchant model when we directly provide tour services to customers.

Under the agency model, various service providers with whom we maintain relationships are ultimately responsible for delivering the underlying services for which our customers transact, such as lodging, air travel, entertainment, or tours. Our obligation to our customers is to arrange for these service providers to provide the underlying services, and we satisfy our obligation at the point in time that these service providers begin to provide the underlying service (e.g., upon the check-in date for lodging stays, upon the show/performance date for entertainment transactions, etc.). We recognize revenue from transactions under this model on a net basis (i.e., the amount charged to our customers less the amounts we pay to the service providers).

Under the merchant model, we provide tour services directly to our customers. Our obligation to provide the tour services is satisfied at the point in time that we finish providing the tour. For transactions occurring under this model, we recognize revenue on a gross basis.

Under either model, our customers pay at the time the original transaction occurs via our sales channels, primarily the Vegas.com website and mobile application. Because the original transaction date almost always precedes the date that our performance obligation is satisfied, we record a contract liability for the amount of consideration received. In general, we satisfy most of our performance obligations within approximately three to four months from the original transaction date, and substantially all performance obligations are satisfied within one year from the original transaction date.

Data Platform Services

Our KanKan business generates our data platform services revenue. Our financial product uses our proprietary data intelligence software to screen potential loan candidates and provide only high-quality loan candidates to affiliates of banks and other lending institutions in China. We earn a commission for our service and we recognize that commission at the point in time at which a loan is issued by the lending institutions to a loan candidate provided by us in an amount we determine by multiplying the commission rate specified in our contracts with the affiliates of the banks and other lending institutions by the amount of such loans issued to loan candidates we have provided.

Per our contracts with the affiliates of the banks and other lending institutions, we may be required to reimburse the affiliates of such lending institutions for a certain percentage of any loan defaults. We have determined that the portion of such contracts potentially requiring us to reimburse our customers represents a guarantee, the accounting for which is not within the scope of ASC 606. As a result, we account for such guarantee using other GAAP and record an initial liability equal to the total potential amount that we could be required to reimburse upon default, which approximates fair value. We initially record the liability in Accrued expense and other current liabilities in our consolidated balance sheets. As we are released from our obligation to perform under the guarantee, we record the amount of reduction in the guarantee liability as data platform services revenue. We have not yet recorded material amounts of revenue resulting from being released from our guarantee obligation.

We also generate revenue by creating and delivering integrated artificial-intelligence-based solutions for clients. Under this type of contract, we provide a single, continuous service to clients who control the assets as we create them. Accordingly, we recognize the revenue over the period of time during which we provide the service.

Advertising and Other

Our Travel & Entertainment segment generates the majority of our advertising revenue, and we report the remaining amount of advertising revenue in Corporate Entity and Other in our segment information. We primarily generate advertising revenue from the use of sponsored links and display advertising placed directly on our website pages. Substantially all of our advertising contracts with customers are completed within one year or less.

In click-through advertising contracts with customers, our obligation is to place our customers’ interactive ads on our websites for a specified period of time. We recognize revenue from click-through advertising at the point in time at which visitors to our websites click through the ads to our advertising customers’ websites. Any variability regarding contract consideration is resolved within the reporting period.

Some of our advertising contracts with customers require us to place our advertising customers’ static display ads on our websites for a specified period of time or in a specific location on our websites, or both. We recognize revenue from such advertising placement arrangements either over time (ratably over the contract term) or based upon the delivery of advertising impressions, depending upon the terms of the contract.

We also generate revenue from other sources, such as from e-commerce activity in which we sell goods to our customers, or media production which involves us producing video or Internet-based content for our customers. We recognize the revenue from these contracts at the point in time when we transfer control of the good sold to the customer or when we deliver the promised media content.

Recently Issued Accounting Pronouncements

In February 2016, the Financial Accounting Standards Board issued ASU 2016-02, Leases (Topic 842), which changes GAAP primarily by requiring lessees to recognize, at lease commencement, a lease liability representing the present value of the lessee’s obligation to make lease payments, and a right-of-use asset representing the lessee’s right to use (or control the use of) a specified asset during the lease term, for leases classified as operating leases. For us, the amendments in ASU 2016-02 will become effective on January 1, 2019, and early adoption is permitted. We are currently evaluating the impact that application of ASU 2016-02 will have on our consolidated financial statements, results of operations and cash flows; however, we expect the impact to be material, as we will be recording assets and liabilities related to most of our leases, including our leases for office

space, which we currently account for as operating leases.

We have reviewed all recently issued accounting pronouncements. The pronouncements that we have already adopted did not have a material effect on our financial condition, results of operations, cash flows or reporting thereof, and except as otherwise noted above, we do not believe that any of the pronouncements that we have not yet adopted will have a material effect upon our financial condition, results of operations, cash flows or reporting thereof.