Revenue Recognition (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenue	$ 18,736	$ 17,033	$ 36,616	$ 41,505
Lead Generation
Revenue	15,225	14,263	29,411	32,723
Click Advertising
Revenue	2,839	2,321	5,770	7,670
Display and Other Advertising
Revenue	672	449	1,435	1,112
Advertising
Revenue	$ 3,511	$ 2,770	$ 7,205	$ 8,782

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details