Organization and Basis of Presentation	3 Months Ended
Mar. 31, 2016
Accounting Policies [Abstract]
Organization and Basis of Presentation	Organization and Basis of Presentation The accompanying unaudited condensed consolidated financial statements include the accounts of XO Group Inc. (“XO Group” or the “Company”) and its wholly-owned subsidiaries. The condensed consolidated financial statements included in this report have been prepared by the Company pursuant to the rules and regulations of the SEC. Certain information and disclosures normally included in financial statements prepared in accordance with generally accepted accounting principles in the United States (“U.S. GAAP”) have been condensed or omitted pursuant to such SEC rules and regulations. The Company believes that the disclosures are adequate to make the information presented not misleading. The financial statements contained herein should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K filed with the SEC for the year ended December 31, 2015. In the opinion of the Company's management, the accompanying unaudited condensed consolidated financial statements contain all normal and recurring adjustments necessary to present fairly the consolidated financial condition, results of operations and changes in cash flows of the Company for the interim periods presented. The results of operations for the three months ended March 31, 2016 are not necessarily indicative of results to be expected for the entire calendar year. Earnings per Share For the three months ended March 31, 2016, the calculation of diluted earnings per share excludes a weighted average number stock options, restricted stock and ESPP shares of 363,994, 104,753, and 0, respectively, because to include them would be antidilutive. The calculation of diluted earnings per share for the three months ended March 31, 2015 excludes a weighted average number of stock options, restricted stock and ESPP shares of 150,000, 57,389 and 1,049, respectively, because to include them would be antidilutive. Recently Issued Accounting Pronouncements In January 2016, the Financial Accounting Standards Board ("FASB") issued guidance requiring equity securities to be measured at fair value with changes in fair value recognized through net income and eliminating the cost method for equity securities without readily determinable fair values. The guidance is effective for annual reporting periods beginning after December 15, 2017, and interim periods within those annual periods. The Company is currently evaluating the impact this guidance will have on its consolidated financial statements. In February 2016, FASB issued guidance on operating leases requiring a lessee to recognize a right-of-use asset and a lease liability, initially measured at the present value of the lease payments, on its balance sheet. The standard also requires a lessee to recognize a single lease cost, calculated so that the cost of the lease is allocated over the lease term, on a generally straight-line basis. The guidance is effective for public companies for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. The Company is currently evaluating the impact this guidance will have on its consolidated financial statements. In March 2016, FASB issued guidance on employee share-based payment accounting requiring all tax effects related to share-based payments at settlement or expiration to be recorded through the income statement and be reported as operating activities on the statement of cash flows. Further, under the new guidance, entities are permitted to make an accounting policy election for the impact of forfeitures on the recognition of expense for share-based payment awards; whereas forfeitures can be estimated, as required today, or recognized when they occur. The guidance is effective for public business entities for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period. Early adoption is permitted. The Company is currently evaluating the impact this guidance will have on its consolidated financial statements. In March 2016, FASB issued guidance on equity method accounting eliminating the requirement to restate historical financial statements, as if the equity method had been used during all previous periods, when an existing cost method investment qualifies for use of the equity method. Under the new guidance, at the point an investment qualifies for the equity method, any unrealized gain or loss in accumulated other comprehensive loss may be recognized through earnings. The guidance is effective for public business entities for annual reporting periods beginning after December 15, 2016, with early adoption permitted. The Company does not expect this guidance to have a material impact on its consolidated financial statements. In March 2016, FASB issued guidance on revenue from contracts with customers that 1) clarifies how to implement revenue recognition guidance related to determining whether an entity is a principal or an agent in a revenue transaction and 2) provides a comprehensive new revenue recognition model that requires a company to recognize revenue to depict the transfer of goods and services to a customer at an amount that reflects the consideration it expects to receive in exchange for those goods and services, and expands on related disclosures. The guidance is effective for public business entities for annual reporting periods beginning after December 15, 2017, and early adoption is permitted. The Company is currently evaluating the impact this guidance will have on its consolidated financial statements.

Organization and Basis of Presentation

The accompanying unaudited condensed consolidated financial statements include the accounts of XO Group Inc. (“XO Group” or the “Company”) and its wholly-owned subsidiaries. The condensed consolidated financial statements included in this report have been prepared by the Company pursuant to the rules and regulations of the SEC. Certain information and disclosures normally included in financial statements prepared in accordance with generally accepted accounting principles in the United States (“U.S. GAAP”) have been condensed or omitted pursuant to such SEC rules and regulations. The Company believes that the disclosures are adequate to make the information presented not misleading. The financial statements contained herein should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Annual Report on Form 10-K filed with the SEC for the year ended December 31, 2015.

In the opinion of the Company's management, the accompanying unaudited condensed consolidated financial statements contain all normal and recurring adjustments necessary to present fairly the consolidated financial condition, results of operations and changes in cash flows of the Company for the interim periods presented. The results of operations for the three months ended March 31, 2016 are not necessarily indicative of results to be expected for the entire calendar year.

Earnings per Share

For the three months ended March 31, 2016, the calculation of diluted earnings per share excludes a weighted average number stock options, restricted stock and ESPP shares of 363,994, 104,753, and 0, respectively, because to include them would be antidilutive. The calculation of diluted earnings per share for the three months ended March 31, 2015 excludes a weighted average number of stock options, restricted stock and ESPP shares of 150,000, 57,389 and 1,049, respectively, because to include them would be antidilutive.

Recently Issued Accounting Pronouncements

In January 2016, the Financial Accounting Standards Board ("FASB") issued guidance requiring equity securities to be measured at fair value with changes in fair value recognized through net income and eliminating the cost method for equity securities without readily determinable fair values. The guidance is effective for annual reporting periods beginning after December 15, 2017, and interim periods within those annual periods. The Company is currently evaluating the impact this guidance will have on its consolidated financial statements.

In February 2016, FASB issued guidance on operating leases requiring a lessee to recognize a right-of-use asset and a lease liability, initially measured at the present value of the lease payments, on its balance sheet. The standard also requires a lessee to recognize a single lease cost, calculated so that the cost of the lease is allocated over the lease term, on a generally straight-line basis. The guidance is effective for public companies for fiscal years beginning after December 15, 2018, including interim periods within those fiscal years. Early adoption is permitted. The Company is currently evaluating the impact this guidance will have on its consolidated financial statements.

In March 2016, FASB issued guidance on employee share-based payment accounting requiring all tax effects related to share-based payments at settlement or expiration to be recorded through the income statement and be reported as operating activities on the statement of cash flows. Further, under the new guidance, entities are permitted to make an accounting policy election for the impact of forfeitures on the recognition of expense for share-based payment awards; whereas forfeitures can be estimated, as required today, or recognized when they occur. The guidance is effective for public business entities for annual reporting periods beginning after December 15, 2016, including interim periods within that reporting period. Early adoption is permitted. The Company is currently evaluating the impact this guidance will have on its consolidated financial statements.

In March 2016, FASB issued guidance on equity method accounting eliminating the requirement to restate historical financial statements, as if the equity method had been used during all previous periods, when an existing cost method investment qualifies for use of the equity method. Under the new guidance, at the point an investment qualifies for the equity method, any unrealized gain or loss in accumulated other comprehensive loss may be recognized through earnings. The guidance is effective for public business entities for annual reporting periods beginning after December 15, 2016, with early adoption permitted. The Company does not expect this guidance to have a material impact on its consolidated financial statements.

In March 2016, FASB issued guidance on revenue from contracts with customers that 1) clarifies how to implement revenue recognition guidance related to determining whether an entity is a principal or an agent in a revenue transaction and 2) provides a comprehensive new revenue recognition model that requires a company to recognize revenue to depict the transfer of goods and services to a customer at an amount that reflects the consideration it expects to receive in exchange for those goods and services, and expands on related disclosures. The guidance is effective for public business entities for annual reporting periods beginning after December 15, 2017, and early adoption is permitted. The Company is currently evaluating the impact this guidance will have on its consolidated financial statements.