Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	175,000,000	175,000,000
Current assets:
Cash and cash equivalents	$ 92,933	$ 102,304
Short-term investment securities	124,575	59,374
Accounts receivable, net	51,093	0
Inventories	39,823	0
Prepaid research and development	4,183	4,237
Other current assets	5,336	2,359
Total current assets	317,943	168,274
Restricted cash	1,285	1,273
Long-term investment securities	0	12,404
Right of use assets	8,050	8,888
Leasehold interest, net	1,415	1,627
Equipment, net	95	307
Goodwill	799	799
Total assets	329,587	193,572
Current liabilities:
Accounts payable and accrued expenses	38,471	42,019
Other current liabilities	1,631	1,169
Lease liability – current portion	1,446	1,581
Accrued compensation	12,172	8,432
Total current liabilities	53,720	53,201
Deferred revenue	6,016	305
Loan payable	100,118	71,135
Lease liability – non-current	9,231	10,344
Total liabilities	169,085	134,985
Commitments and contingencies
Stockholders’ equity:
Common stock, $0.001 par value per share (175,000,000 shares authorized, 151,465,598 and 146,426,697 shares issued, 151,424,289 and 146,385,388 shares outstanding at December 31, 2023 and December 31, 2022, respectively	151	146
Additional paid-in capital	1,674,946	1,585,708
Treasury stock, at cost, 41,309 shares at December 31, 2023 and December 31, 2022	(234)	(234)
Accumulated deficit	(1,514,361)	(1,527,033)
Total stockholders’ equity	160,502	58,587
Total liabilities and stockholders’ equity	$ 329,587	$ 193,572