CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 14,136	$ 100,808
Short-term investments	108,427	56,458
OMIDRIA contract royalty asset, short-term	43,794	44,319
Receivables, net	14,479	38,155
Prepaid expense and other assets	11,886	8,216
Total current assets	192,722	247,956
OMIDRIA contract royalty asset	126,812	140,251
Property and equipment, net	1,921	1,731
Right of use assets	23,129	28,276
Restricted investments	1,054	1,054
Total assets	345,638	419,268
Current liabilities:
Accounts payable	10,876	13,400
Accrued expenses	23,480	33,134
Current portion of lease liabilities	4,145	5,255
Total current liabilities	38,501	51,789
Lease liabilities, non-current	24,520	29,126
Unsecured convertible senior notes, net	314,358	313,458
Other accrued liabilities - noncurrent	961	1,115
Commitments and contingencies (Note 10)
Shareholders' equity (deficit):
Preferred stock, par value $0.01 per share, 20,000,000 shares authorized; none issued and outstanding at June 30, 2022 and December 31, 2021.
Common stock, par value $0.01 per share, 150,000,000 shares authorized at June 30, 2022 and December 31, 2021; 62,730,015 and 62,628,855 shares issued and outstanding at June 30, 2022 and December 31, 2021, respectively.	627	626
Additional paid-in capital	713,665	706,288
Accumulated deficit	(746,994)	(683,134)
Total shareholders' equity (deficit)	(32,702)	23,780
Total liabilities and shareholders' equity (deficit)	$ 345,638	$ 419,268