Income Taxes - Differences in Statutory Rate and Effective Rate (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
U.S. statutory rate	$ 5,611	$ (15,758)	$ (2,411)
Permanent items	2,309	1,764	1,176
Acquisition costs - Progenics	0	0	2,723
Recognition of deferred tax asset - assets held for sale	0	0	(3,000)
Section 162(m)	247	1,028	717
Uncertain tax positions	(12,629)	(8,952)	2,818
Other tax credits	(4,085)	(990)	(1,065)
State and local taxes	67	656	1,457
Impact on deferred taxes of change in tax rate	4,169	3,049	0
Non-deductible changes in fair value of contingent assets and liabilities	5,422	15,015	230
Foreign tax rate differential	68	23	(254)
Valuation allowance	(30)	(400)	(318)
Benefit of windfall related to stock compensation	(4,612)	(1,164)	(128)
Change in indemnification deferred tax asset	2,343	1,786	(590)
Other	(228)	184	639
Income tax (benefit) expense	$ (1,348)	$ (3,759)	$ 1,994