CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Income Statement [Abstract]
Revenue	$ 297,450	$ 220,251	$ 840,214	$ 687,661
Costs and expenses:
Cost of revenue (exclusive of depreciation and amortization shown separately below)	15,020	13,220	42,849	40,936
Selling and marketing expense	206,475	154,670	589,143	464,129
General and administrative expense	40,126	33,705	114,926	94,276
Product development	13,384	11,477	39,142	33,252
Depreciation	4,808	3,535	12,969	10,463
Amortization of intangibles	10,345	13,090	32,967	40,603
Change in fair value of contingent consideration	(196)	6,658	(8,249)	7,711
Severance	47	0	47	190
Litigation settlements and contingencies	22	13	360	(983)
Total costs and expenses	290,031	236,368	824,154	690,577
Operating income (loss)	7,419	(16,117)	16,060	(2,916)
Other (expense) income, net:
Interest expense, net	(11,826)	(16,617)	(31,881)	(26,406)
Other income	0	0	40,072	7
(Loss) income before income taxes	(4,407)	(32,734)	24,251	(29,315)
Income tax benefit	1	7,925	455	14,866
Net (loss) income from continuing operations	(4,406)	(24,809)	24,706	(14,449)
(Loss) income from discontinued operations, net of tax	(54)	166	(3,516)	(25,550)
Net (loss) income and comprehensive (loss) income	$ (4,460)	$ (24,643)	$ 21,190	$ (39,999)
Weighted average shares outstanding:
Basic (in shares)	13,268	13,033	13,194	12,992
Diluted (in shares)	13,268	13,033	13,797	12,992
(Loss) income per share from continuing operations:
Basic (in dollars per share)	$ (0.33)	$ (1.90)	$ 1.87	$ (1.11)
Diluted (in dollars per share)	(0.33)	(1.90)	1.79	(1.11)
(Loss) income per share from discontinued operations:
Basic (in dollars per share)	0	0.01	(0.27)	(1.97)
Diluted (in dollars per share)	0	0.01	(0.25)	(1.97)
Net (loss) income per share:
Basic (in dollars per share)	(0.34)	(1.89)	1.61	(3.08)
Diluted (in dollars per share)	$ (0.34)	$ (1.89)	$ 1.54	$ (3.08)