CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 64,676	$ 120,572
Short-term investments		29,716
Accounts receivable, net	3,435	3,799
Inventory	4,873	2,413
Prepaid expenses and other current assets	8,898	8,746
Total current assets	81,882	165,246
Property and equipment, net	3,720	3,843
Other assets	1,481	1,819
Total assets	87,083	170,908
Current liabilities:
Accounts payable	6,237	4,003
Current portion of notes payable	11,550	11,551
Current portion of revenue interest financing payable	2,849	2,211
Accrued expenses	15,231	22,859
Total current liabilities	35,867	40,624
Notes payable, net of deferred financing costs	45,075	61,423
Revenue interest financing payable, net of deferred financing costs	35,431	33,766
Contract liabilities, net	17,844	17,545
Other long-term liabilities	211	785
Total liabilities	134,428	154,143
Stockholders' (deficit) equity:
Common stock, $0.001 par value; 150,000,000 shares authorized, 54,971,226 issued and 54,963,919 outstanding at June 30, 2024 and 54,585,428 issued and 54,578,121 outstanding at December 31, 2023	55	55
Additional paid-in capital	599,023	588,656
Treasury stock at cost, 7,307 shares at June 30, 2024 and December 31, 2023
Accumulated other comprehensive loss		(20)
Accumulated deficit	(646,423)	(571,926)
Total stockholders' (deficit) equity	(47,345)	16,765
Total liabilities and stockholders' (deficit) equity	$ 87,083	$ 170,908