Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Revenue from contracts with customers	$ 27,142	$ 29,292	$ 58,746	$ 61,641
Lead Fees [Member]
Revenue from contracts with customers	21,691	22,211	47,389	46,291
Click Advertising [Member]
Revenue from contracts with customers	4,456	5,771	9,515	12,462
Display and Other Advertising [Member]
Revenue from contracts with customers	976	1,179	1,795	2,575
Advertising [Member]
Revenue from contracts with customers	5,432	6,950	11,310	15,037
Other Revenues [Member]
Revenue from contracts with customers	$ 19	$ 131	$ 47	$ 313