CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
ASSETS
Cash and cash equivalents	$ 309,511	$ 478,750
Accounts receivable	42	4,467
Unbilled receivable	696	2,345
Contract assets		3,000
Non-cash royalty receivable	3,453	4,115
Prepaid and other current assets	16,714	7,322
Total current assets	330,416	499,999
Property and equipment, net of accumulated depreciation	4,474	4,663
Operating lease right-of-use assets	10,809	12,392
Other assets	13,100	8,711
Total assets	358,799	525,765
LIABILITIES AND SHAREHOLDERS' EQUITY
Accounts payable	20,178	18,434
Accrued compensation	8,621	5,469
Other accrued liabilities	47,136	23,077
Current portion of liability related to the sale of future royalties, net of deferred financing costs of $175 and $198, respectively	8,647	6,077
Current portion of operating lease liability	3,981	3,537
Current portion of deferred revenue	15,079	44,351
Total current liabilities	103,642	100,945
Deferred revenue, net of current portion	38,732	47,717
Operating lease liability, net of current portion	12,217	15,244
Liability related to the sale of future royalties, net of current portion and deferred financing costs of $241 and $381, respectively	25,901	34,967
Other long-term liabilities	300	1,306
Total liabilities	180,792	200,179
Commitments and contingencies (Note H)
Shareholders' equity:
Preferred stock, $.01 par value; authorized 5,000 shares; no shares issued and outstanding as of each of September 30, 2022 and December 31, 2021
Common stock, $.01 par value; authorized 600,000 shares; 220,751 and 220,361 shares issued and outstanding as of September 30, 2022 and December 31, 2021, respectively	2,208	2,204
Additional paid-in capital	1,810,863	1,794,525
Accumulated deficit	(1,635,064)	(1,471,143)
Total shareholders' equity	178,007	325,586
Total liabilities and shareholders' equity	$ 358,799	$ 525,765