CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets:
Cash and cash equivalents	$ 173,025	$ 291,049
Accounts receivable , net	15,275	9,401
Receivables from collaboration arrangement	65,721	54,672
Inventory	46,846	55,897
Prepaid expenses	20,535	29,559
Other current assets	2,136	2,933
Total current assets	323,538	443,511
Property and equipment, net	161	170
Equity Method Investment	35,061	39,154
Equity and long-term investments	397,940	363,859
Capitalized fees paid, net	90,695	97,607
Right-of-use assets	2,719	3,265
Goodwill	14,882	26,713
Intangible assets	243,356	252,919
Deferred tax assets	6,327	0
Other assets	3,562	4,299
Total assets	1,118,241	1,231,497
Current liabilities:
Accounts payable	4,592	2,939
Accrued personnel-related expenses	5,474	8,022
Accrued interest payable	3,422	4,359
Deferred revenue	3,254	2,094
Convertible subordinated notes due 2023, net of issuance costs	0	96,193
Income tax payable	154	154
Other accrued liabilities	22,502	21,207
Total current liabilities	39,398	134,968
Long-term debt, net of discount and issuance costs	445,201	444,180
Other long-term liabilities	68,584	70,918
Deferred tax liabilities, net	0	5,771
Income tax payable, long-term	9,971	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, 65,225 and 69,188 issued and outstanding as of June 30, 2023 and December 31, 2022, respectively	653	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	1,117,029	1,163,836
Accumulated deficit	(168,766)	(204,911)
Total stockholders' equity	555,087	565,788
Total liabilities and stockholders' equity	$ 1,118,241	$ 1,231,497