Deferred Revenue from Membership Upgrades and Deferred Commission Expense (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024
Movement in Deferred Revenue [Roll Forward]
Deferred revenue, beginning	$ 229,301
Revenue recognized from membership upgrades	(6,572)	$ (7,997)
Net increase (decrease) in deferred revenue	5,346	17,758
Deferred revenue, ending (a)	228,075
Deferred Commissions Expense
Movement in Deferred Sales Inducements [Roll Forward]
Deferred commission expense, beginning	56,516	53,641
Deferred commission expense	3,603	3,479
Commission expense recognized	(2,271)	(2,238)
Net increase in deferred commission expense	1,332	1,241
Deferred commission expense, ending	57,848	54,882
Membership Subscription
Movement in Deferred Revenue [Roll Forward]
Deferred revenue, beginning	218,164	206,625
Deferred membership upgrade revenue	4,246	16,328
Revenue recognized from membership upgrades	(6,572)	(7,997)
Net increase (decrease) in deferred revenue	(2,326)	8,331
Deferred revenue, ending (a)	$ 215,838	$ 214,956