Income Taxes - Schedule of Differences in Statutory Rate and Effective Rate (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
U.S. statutory rate	$ 86,298	$ 5,611	$ (15,758)
Permanent items	1,042	2,309	1,764
Sale of RELISTOR licensed intangible asset associated with net sales royalties	(10,817)	0	0
Section 162(m)	307	247	1,028
Uncertain tax positions	(5,045)	(12,629)	(8,952)
Tax credits	(2,118)	(4,085)	(990)
State and local taxes	18,726	67	656
Impact on deferred taxes of change in tax rate	(330)	4,169	3,049
Changes in fair value of contingent assets and liabilities	(1,948)	5,422	15,015
Foreign tax rate differential	128	68	23
Valuation allowance	(4)	(30)	(400)
Stock compensation	(3,941)	(4,612)	(1,164)
Change in indemnification deferred tax asset	1,240	2,343	1,786
Other	744	(228)	184
Income tax expense (benefit)	$ 84,282	$ (1,348)	$ (3,759)