Significant Accounting Policies (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($) segment	Sep. 30, 2024 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)
Revenue Recognition
Reduction in accrued liabilities	$ (200)	$ (3,725)	$ (1,600)	$ (5,965)
Increase in net product sales	200	3,725	1,600	5,965
Accounts receivable, less allowances	72,975	72,519	72,975	72,519	$ 43,811	$ 55,568
Selling, marketing and administrative expenses	47,031	41,825	120,783	115,783
Advertising expense	1,931	1,281	$ 4,054	2,930
Number of reportable segment | segment			1
Investments:
Other (loss) income, net	16,233	7,188	$ 30,254	21,120
Unrealized gains (losses) on investments	(4,453)	6,462	(10)	7,443
Revision of Prior Period, Error Correction, Adjustment [Member]
Investments:
Other (loss) income, net	4,495		3,231
Unrealized gains (losses) on investments	(4,495)		(3,231)
Shipping and Handling
Revenue Recognition
Selling, marketing and administrative expenses	$ 15,434	$ 15,442	$ 42,397	$ 42,897