Restructuring Costs	12 Months Ended
	Dec. 31, 2019
Restructuring and Related Activities [Abstract]
Restructuring Costs	The Company divested its buyer platform on August 7, 2017. See Note 3, Disposition of Buyer Platform for more information regarding the sale of the buyer platform. As a result of the divestiture and corresponding reduction in number of employees, the Company relocated its corporate headquarters in New York as well as its office in Santa Monica, California. The Company ceased using its former corporate headquarters and Santa Monica location as of May 31, 2018. The leases associated with these offices will expire on January 31, 2025 and June 30, 2020, respectively.As a result of the Company's Santa Monica relocation, the Company incurred one-time costs of $117 during June of 2018. As a result of a change in term used in calculating the one-time costs, an additional $32 was recorded July of 2018. The company recorded the costs of $149 as restructuring costs in the Company's consolidated statements of operations for the year ended December 31, 2018. The Company had no restructuring costs for the year ended December 31, 2019.