CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 179,997	$ 291,049
Accounts receivable , net	10,752	9,401
Receivables from collaboration arrangement	57,014	54,672
Inventory	40,515	55,897
Prepaid expenses	14,729	29,559
Other current assets	1,992	2,933
Total current assets	304,999	443,511
Property and equipment, net	361	170
Equity Method Investment	107,040	39,154
Equity and long-term investments	422,491	363,859
Capitalized fees paid, net	87,239	97,607
Right-of-use assets	2,828	3,265
Goodwill	17,905	26,713
Intangible assets	236,845	252,919
Deferred tax assets	4,952	0
Other assets	3,444	4,299
Total assets	1,188,104	1,231,497
Current liabilities:
Accounts payable	3,783	2,939
Accrued personnel-related expenses	5,166	8,022
Accrued interest payable	833	4,359
Deferred revenue	1,548	2,094
Convertible subordinated notes due 2023, net of issuance costs	0	96,193
Income tax payable	154	154
Other accrued liabilities	24,699	21,207
Total current liabilities	36,183	134,968
Long-term debt, net of discount and issuance costs	445,718	444,180
Other long-term liabilities	68,690	70,918
Deferred tax liabilities, net	0	5,771
Income tax payable, long-term	10,020	9,872
Commitments and contingencies (Note 12)
Stockholders' equity:
Preferred stock: $0.01 par value, 230 shares authorized, no shares issued and outstanding	0	0
Common stock: $0.01 par value, 200,000 shares authorized, 64,384 and 69,188 issued and outstanding as of September 30, 2023 and December 31, 2022	644	692
Treasury stock: at cost, 32,005 shares as of June 30, 2023 and December 31, 2022, respectively	(393,829)	(393,829)
Additional paid-in capital	1,107,398	1,163,836
Accumulated deficit	(86,720)	(204,911)
Total stockholders' equity	627,493	565,788
Total liabilities and stockholders' equity	$ 1,188,104	$ 1,231,497