CONSOLIDATED BALANCE SHEETS - USD ($)	Mar. 31, 2023	Dec. 31, 2022
ASSETS
Cash and cash equivalents	$ 201,249,000	$ 275,138,000
Accounts receivable	27,342,000	12,596,000
Unbilled receivable	1,249,000	1,531,000
Non-cash royalty receivable	2,455,000	3,851,000
Inventory	614,000
Prepaid and other current assets	10,955,000	11,005,000
Total current assets	243,864,000	304,121,000
Property and equipment, net of accumulated depreciation	4,067,000	4,377,000
Operating lease right-of-use assets	9,627,000	10,231,000
Long-term inventory	16,291,000	16,196,000
Other assets	14,496,000	14,011,000
Total assets	288,345,000	348,936,000
LIABILITIES AND SHAREHOLDERS' EQUITY
Accounts payable	32,260,000	45,353,000
Accrued compensation	11,780,000	11,111,000
Other accrued liabilities	30,918,000	38,783,000
Current portion of liability related to the sale of future royalties, net of deferred financing costs of $150 and $162, respectively	9,014,000	8,659,000
Current portion of operating lease liability	4,213,000	4,096,000
Current portion of deferred revenue	13,444,000	13,856,000
Total current liabilities	101,629,000	121,858,000
Deferred revenue, net of current portion	34,055,000	36,355,000
Operating lease liability, net of current portion	10,049,000	11,148,000
Liability related to the sale of future royalties, net of current portion and deferred financing costs of $172 and $205, respectively	20,394,000	23,449,000
Other long-term liabilities	300,000	300,000
Total liabilities	166,427,000	193,110,000
Commitments and contingencies (Note L)
Shareholders' equity:
Preferred stock, $.01 par value; authorized 5,000 shares; no shares issued and outstanding as of each of March 31, 2023 and December 31, 2022, respectively
Common stock, $.01 par value; authorized 600,000 shares; 226,070 and 220,046 shares issued and outstanding as of March 31, 2023 and December 31, 2022, respectively	2,261,000	2,260,000
Additional paid-in capital	1,854,743,000	1,847,638,000
Accumulated deficit	(1,735,086,000)	(1,694,072,000)
Total shareholders' equity	121,918,000	155,826,000
Total liabilities and shareholders' equity	$ 288,345,000	$ 348,936,000