Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Consolidated Statements of Income [Abstract]
Revenue	$ 386,138	$ 439,081	$ 750,628	$ 856,387
Cost of sales	120,405	131,904	237,934	255,146
Gross profit	265,733	307,177	512,694	601,241
Operating expenses:
Selling expenses	128,228	165,463	246,774	319,005
General and administrative expenses	106,725	117,921	219,929	242,487
Restructuring and impairment expenses	0	149,350	25,114	156,484
Total operating expenses	234,953	432,734	491,817	717,976
Operating income (loss)	30,780	(125,557)	20,877	(116,735)
Interest expense	2,526	6,720	5,809	14,045
Gain on sale of business	0	0	176,162	0
Other income (expense), net	(843)	629	(29,218)	233
Income (loss) before provision for income taxes	27,411	(131,648)	162,012	(130,547)
Provision (benefit) for income taxes	6,292	(13,390)	33,378	(11,756)
Net income (loss)	$ 21,119	$ (118,258)	$ 128,634	$ (118,791)
Net income (loss) per share (Note 7):
Basic (in dollars per share)	$ 0.43	$ (2.38)	$ 2.59	$ (2.39)
Diluted (in dollars per share)	$ 0.43	$ (2.38)	$ 2.59	$ (2.39)
Weighted-average common shares outstanding:
Basic (in shares)	49,441	49,688	49,601	49,613
Diluted (in shares)	49,499	49,688	49,748	49,613