Spin-off of Red Violet and business combinations	12 Months Ended
Dec. 31, 2018
Business Combinations [Abstract]
Spin-off of Red Violet and business combinations	Spin-off of Red Violet and business combinations Spin-off of Red Violet On February 12, 2018, the Company's Board of Directors approved a plan to spin off Red Violet, which was governed by a Separation and Distribution Agreement, as well as other related agreements between the Company and Red Violet, each entered into on February 27, 2018 (collectively, the “Spin-off Agreements”). The Company contributed $19.7 million in cash to Red Violet upon completion of the Spin-off. On February 28, 2018, a Registration Statement on Form 10 was filed by Red Violet with the SEC, which registered the shares of Red Violet that were distributed in the Spin-off. On March 7, 2018, the Company announced that the Board of Directors established March 19, 2018 as the record date ("Record Date") and March 26, 2018 as the distribution date (the “Distribution Date”) for the Spin-off. On March 9, 2018, in order to meet the NASDAQ initial listing requirement of a minimum $4.00 per share bid price, the Company adjusted the Spin-off ratio so that on the Distribution Date, stockholders of the Company received, by way of a dividend, one share of Red Violet common stock for each 7.5 shares of the Company's common stock held as of the Record Date. On March 8, 2018, the Compensation Committee of the Company's Board of Directors approved the acceleration (the "Acceleration") of an aggregate of 5,157,998 stock options, restricted stock units ("RSUs") and shares of restricted stock held by certain employees, consultants, and directors, including only those employees who would continue with Red Violet upon completion of the Spin-off, subject to such employees still being employed or providing services on the acceleration date, which was subsequently determined to be March 12, 2018 (the "Acceleration Date"). Accordingly, share-based compensation expense of $15.5 million resulting from the Acceleration was recognized in discontinued operations during the first quarter of December 31, 2018. Q Interactive Acquisition and Integration On June 8, 2016, in order to expand and strengthen the Company’s business in the consumer marketing industry, the Company entered into and consummated the transactions contemplated by a Membership Interest Purchase Agreement with Selling Source, pursuant to which the Company acquired all of the membership interests of Q Interactive. As consideration for the Membership Interests, after preliminary adjustment for Q Interactive’s net working capital at closing, the Company issued to Selling Source 2,369,190 shares of the Company’s common stock. Additional consideration based on gross revenue targets, which were met in the first quarter of 2017, was settled on November 3, 2017 in the form of 2,750,000 shares of common stock. Total consideration for the acquisition of $21,431 was recorded by the Company and allocated to working capital, intangible assets and goodwill. On January 18, 2017, the Company’s management and Board of Directors approved a plan to integrate Q Interactive’s business into the Company (the “Q Interactive Integration”), which resulted in Q Interactive becoming a wholly-owned subsidiary of the Company. During the year ended December 31, 2017, an aggregate of $780 in restructuring costs associated with the Q Interactive Integration were recognized in general and administrative expenses in the consolidated statements of operations. Additionally, during the first quarter of 2017, the Company wrote off the remaining balance of certain long-lived assets of $3,626, primarily related to trade names and proprietary technology acquired in the Q Interactive Acquisition, and recognized a write-off of long-lived assets on the consolidated statements of operations.

Spin-off of Red Violet and business combinations

Spin-off of Red Violet

On February 12, 2018, the Company's Board of Directors approved a plan to spin off Red Violet, which was governed by a Separation and Distribution Agreement, as well as other related agreements between the Company and Red Violet, each entered into on February 27, 2018 (collectively, the “Spin-off Agreements”). The Company contributed $19.7 million in cash to Red Violet upon completion of the Spin-off. On February 28, 2018, a Registration Statement on Form 10 was filed by Red Violet with the SEC, which registered the shares of Red Violet that were distributed in the Spin-off.

On March 7, 2018, the Company announced that the Board of Directors established March 19, 2018 as the record date ("Record Date") and March 26, 2018 as the distribution date (the “Distribution Date”) for the Spin-off. On March 9, 2018, in order to meet the NASDAQ initial listing requirement of a minimum $4.00 per share bid price, the Company adjusted the Spin-off ratio so that on the Distribution Date, stockholders of the Company received, by way of a dividend, one share of Red Violet common stock for each 7.5 shares of the Company's common stock held as of the Record Date.

On March 8, 2018, the Compensation Committee of the Company's Board of Directors approved the acceleration (the "Acceleration") of an aggregate of 5,157,998 stock options, restricted stock units ("RSUs") and shares of restricted stock held by certain employees, consultants, and directors, including only those employees who would continue with Red Violet upon completion of the Spin-off, subject to such employees still being employed or providing services on the acceleration date, which was subsequently determined to be March 12, 2018 (the "Acceleration Date"). Accordingly, share-based compensation expense of $15.5 million resulting from the Acceleration was recognized in discontinued operations during the first quarter of December 31, 2018.

Q Interactive Acquisition and Integration

On June 8, 2016, in order to expand and strengthen the Company’s business in the consumer marketing industry, the Company entered into and consummated the transactions contemplated by a Membership Interest Purchase Agreement with Selling Source, pursuant to which the Company acquired all of the membership interests of Q Interactive. As consideration for the Membership Interests, after preliminary adjustment for Q Interactive’s net working capital at closing, the Company issued to Selling Source 2,369,190 shares of the Company’s common stock. Additional consideration based on gross revenue targets, which were met in the first quarter of 2017, was settled on November 3, 2017 in the form of 2,750,000 shares of common stock. Total consideration for the acquisition of $21,431 was recorded by the Company and allocated to working capital, intangible assets and goodwill.

On January 18, 2017, the Company’s management and Board of Directors approved a plan to integrate Q Interactive’s business into the Company (the “Q Interactive Integration”), which resulted in Q Interactive becoming a wholly-owned subsidiary of the Company. During the year ended December 31, 2017, an aggregate of $780 in restructuring costs associated with the Q Interactive Integration were recognized in general and administrative expenses in the consolidated statements of operations. Additionally, during the first quarter of 2017, the Company wrote off the remaining balance of certain long-lived assets of $3,626, primarily related to trade names and proprietary technology acquired in the Q Interactive Acquisition, and recognized a write-off of long-lived assets on the consolidated statements of operations.