Summary of Significant Accounting Policies (Policies)	9 Months Ended
Sep. 30, 2017
Accounting Policies [Abstract]
New accounting pronouncements not yet adopted	Recent accounting pronouncements The Financial Accounting Standards Board (the “FASB”) amended the FASB Accounting Standards Codification and created a new Topic 606, Revenue from Contracts with Customers. Under the amendment, recognition of revenue occurs when a customer obtains control of promised goods or services in an amount that reflects the consideration which the entity expects to receive in exchange for those goods or services. In addition, the standard requires disclosure of the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. The required adoption date of the standard is January 1, 2018. The two permitted transition methods are the full retrospective method, in which case the standard would be applied to each prior reporting period presented and the cumulative effect of applying the standard would be recognized at the earliest period shown; and the modified retrospective method, in which case the cumulative effect of applying the standard would be recognized at the date of initial application. We will adopt the standard using the modified retrospective method. Our primary source of revenue is through the sale of online subscription advertising products to car dealerships. We currently do not expect the standard to have a material impact on this revenue stream, which will continue to be recognized primarily on a straight-line basis over the contract term as the service is provided to our customers. In January 2016, the FASB issued Accounting Standards Update No. 2016-01, Financial Instruments—Overall (Subtopic 825-10). This guidance amended several elements surrounding the recognition and measurement of financial instruments. The new guidance requires equity investments (except those accounted for under the equity method of accounting, or those that result in consolidation) to be measured at fair value with changes in fair value recognized in Net income. The new guidance is effective for us beginning in the first quarter of 2018. We are currently evaluating the effect this new guidance will have on our financial statements and related disclosures. In February 2016, the FASB amended the FASB Accounting Standards Codification and created a new Topic 842, Leases. This guidance related to leases which will require lessees to recognize assets and liabilities on the Condensed Consolidated and Combined Balance Sheets for leases with lease terms of more than 12 months. Consistent with current U.S. GAAP, the recognition, measurement and presentation of expenses and cash flows arising from a lease by a lessee primarily will depend on its classification as a finance or operating lease. However, unlike current U.S. GAAP—which requires only capital leases to be recognized on the Condensed Consolidated and Combined Balance Sheets—the new guidance will require both types of leases to be recognized on the Condensed Consolidated and Combined Balance Sheets. The new guidance is effective for us beginning in the first quarter of 2019 and will be adopted using a modified retrospective approach. We are currently evaluating the effect it is expected to have on our financial statements and related disclosures. In June 2016, the FASB issued Accounting Standards Update No. 2016-13, Financial Instruments—Credit Losses (Topic 326). This guidance related to the measurement of credit losses on financial instruments. The new guidance changes the way credit losses on accounts receivable are estimated. Under current U.S. GAAP, credit losses on trade accounts receivable are recognized once it is probable that such losses will occur. Under the new guidance, we will be required to estimate credit losses based on the expected amount of future collections which may result in earlier recognition of allowance for doubtful accounts. The new guidance is effective for public companies beginning in the first quarter of 2020 and will be adopted using a modified retrospective approach. We are currently evaluating the effect this new guidance will have on our financial statements and related disclosures. In January 2017, the FASB issued Accounting Standards Update No. 2017-04, Simplifying the Test for Goodwill Impairment. This guidance eliminates the requirement to calculate the implied fair value of goodwill (i.e., Step 2 of today’s goodwill impairment test) to measure a goodwill impairment charge. Instead, companies will record an impairment charge based on the excess of a reporting unit’s carrying amount over its fair value (i.e., measure the charge based on Step 1 of the impairment test). The standard has tiered effective dates, starting in 2020. Early adoption is permitted for interim and annual goodwill impairment testing dates after January 1, 2017. We are currently evaluating the effect this new guidance will have on our financial statements and related disclosures. In May 2017, the FASB issued ASU No. 2017-09, Compensation—Stock Compensation (Topic 718). This guidance clarifies when changes to the terms or conditions of a share-based payment award must be accounted for as modifications. The new guidance will allow the Company to make certain changes to awards without accounting for them as modifications and does not change the accounting for modifications. The new guidance should be applied prospectively and is effective for us beginning in the first quarter of 2018. We are currently evaluating the effect this new guidance will have on our financial statements and related disclosures.

Recent accounting pronouncements

The Financial Accounting Standards Board (the “FASB”) amended the FASB Accounting Standards Codification and created a new Topic 606, Revenue from Contracts with Customers. Under the amendment, recognition of revenue occurs when a customer obtains control of promised goods or services in an amount that reflects the consideration which the entity expects to receive in exchange for those goods or services. In addition, the standard requires disclosure of the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers. The required adoption date of the standard is January 1, 2018. The two permitted transition methods are the full retrospective method, in which case the standard would be applied to each prior reporting period presented and the cumulative effect of applying the standard would be recognized at the earliest period shown; and the modified retrospective method, in which case the cumulative effect of applying the standard would be recognized at the date of initial application. We will adopt the standard using the modified retrospective method. Our primary source of revenue is through the sale of online subscription advertising products to car dealerships. We currently do not expect the standard to have a material impact on this revenue stream, which will continue to be recognized primarily on a straight-line basis over the contract term as the service is provided to our customers.

In January 2016, the FASB issued Accounting Standards Update No. 2016-01, Financial Instruments—Overall (Subtopic 825-10). This guidance amended several elements surrounding the recognition and measurement of financial instruments. The new guidance requires equity investments (except those accounted for under the equity method of accounting, or those that result in consolidation) to be measured at fair value with changes in fair value recognized in Net income. The new guidance is effective for us beginning in the first quarter of 2018. We are currently evaluating the effect this new guidance will have on our financial statements and related disclosures.

In February 2016, the FASB amended the FASB Accounting Standards Codification and created a new Topic 842, Leases. This guidance related to leases which will require lessees to recognize assets and liabilities on the Condensed Consolidated and Combined Balance Sheets for leases with lease terms of more than 12 months. Consistent with current U.S. GAAP, the recognition, measurement and presentation of expenses and cash flows arising from a lease by a lessee primarily will depend on its classification as a finance or operating lease. However, unlike current U.S. GAAP—which requires only capital leases to be recognized on the Condensed Consolidated and Combined Balance Sheets—the new guidance will require both types of leases to be recognized on the Condensed Consolidated and Combined Balance Sheets. The new guidance is effective for us beginning in the first quarter of 2019 and will be adopted using a modified retrospective approach. We are currently evaluating the effect it is expected to have on our financial statements and related disclosures.

In June 2016, the FASB issued Accounting Standards Update No. 2016-13, Financial Instruments—Credit Losses (Topic 326). This guidance related to the measurement of credit losses on financial instruments. The new guidance changes the way credit losses on accounts receivable are estimated. Under current U.S. GAAP, credit losses on trade accounts receivable are recognized once it is probable that such losses will occur. Under the new guidance, we will be required to estimate credit losses based on the expected amount of future collections which may result in earlier recognition of allowance for doubtful accounts. The new guidance is effective for public companies beginning in the first quarter of 2020 and will be adopted using a modified retrospective approach. We are currently evaluating the effect this new guidance will have on our financial statements and related disclosures.

In January 2017, the FASB issued Accounting Standards Update No. 2017-04, Simplifying the Test for Goodwill Impairment. This guidance eliminates the requirement to calculate the implied fair value of goodwill (i.e., Step 2 of today’s goodwill impairment test) to measure a goodwill impairment charge. Instead, companies will record an impairment charge based on the excess of a reporting unit’s carrying amount over its fair value (i.e., measure the charge based on Step 1 of the impairment test). The standard has tiered effective dates, starting in 2020. Early adoption is permitted for interim and annual goodwill impairment testing dates after January 1, 2017. We are currently evaluating the effect this new guidance will have on our financial statements and related disclosures.

In May 2017, the FASB issued ASU No. 2017-09, Compensation—Stock Compensation (Topic 718). This guidance clarifies when changes to the terms or conditions of a share-based payment award must be accounted for as modifications. The new guidance will allow the Company to make certain changes to awards without accounting for them as modifications and does not change the accounting for modifications. The new guidance should be applied prospectively and is effective for us beginning in the first quarter of 2018. We are currently evaluating the effect this new guidance will have on our financial statements and related disclosures.