Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenue from contracts with customers	$ 17,033	$ 27,142	$ 41,505	$ 58,746
Lead Fees
Revenue from contracts with customers	14,263	21,691	32,723	47,389
Click Advertising
Revenue from contracts with customers	2,321	4,456	7,670	9,515
Display and Other Advertising
Revenue from contracts with customers	435	976	1,098	1,795
Advertising
Revenue from contracts with customers	2,756	5,432	8,768	11,310
Other Revenues
Revenue from contracts with customers	$ 14	$ 19	$ 14	$ 47