Income Taxes - Components of Deferred Income Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Deferred income tax assets:
Federal net operating loss	$ 68,022	$ 76,646
State net operating loss	55,134	56,583
Foreign net operating loss	16,947	17,106
Research and development expense	14,349	290
Tax credits	22,488	22,938
Stock options	33,558	30,324
Accruals	2,724	10,692
Equity investments	20,968	15,735
Bad debts	265	265
Lease liability	1,842	1,091
Foreign credits	9,629	9,829
Available-for-sale securities	2,649	2,582
Operating lease asset	10,919	14,554
Other	5,263	6,493
Deferred income tax assets	264,757	265,128
Deferred income tax liabilities:
Intangible assets	(94,856)	(80,230)
Convertible debt	0	(6,286)
Operating lease liability	(10,675)	(14,554)
Investment in subsidiaries	0	(42,140)
Fixed assets	(180)	(2,592)
Other	(3,097)	(1,638)
Deferred income tax liabilities	(108,808)	(147,440)
Net deferred income tax assets (liabilities)	155,949	117,688
Valuation allowance	(279,212)	(260,397)
Net deferred income tax liabilities	(123,263)	(142,709)
Other Assets
Deferred income tax liabilities:
Net deferred income tax liabilities	$ (3,200)	$ (5,800)