Condensed Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 30,115	$ 16,233
Short-term investments	103,089	157,708
Accounts receivable	440	565
Inventory, net	12,442	13,572
Prepaid expenses and other current assets	2,609	4,150
Total current assets	148,695	192,228
Right-of-use lease assets	56,381	57,797
Property and equipment, net	13,249	13,692
Restricted cash	600	600
Other noncurrent assets	1,078	1,150
Total assets	220,003	265,467
Current liabilities:
Accounts payable	1,498	2,587
Accrued expenses	4,049	6,079
Lease liabilities, current	7,065	7,764
Other current liabilities	4,335	1,857
Total current liabilities	16,947	18,287
Lease liabilities, non current	58,370	58,623
Long-term debt, net of issuance costs	6,355	8,901
Other noncurrent liabilities	624	650
Total liabilities	82,296	86,461
Commitments and contingencies (Note 9)
Stockholders' equity:
Common stock, $0.0001 par value; 400,000,000 shares authorized, 2,491,619 and 2,460,772 shares issued and outstanding at June 30, 2024 and December 31, 2023, respectively	0	7
Additional paid-in capital	521,654	516,439
Accumulated other comprehensive gain (loss)	(74)	155
Accumulated deficit	(383,873)	(337,595)
Total stockholders' equity	137,707	179,006
Total liabilities and stockholders' equity	220,003	265,467
Series A Common Stock Equivalent Convertible Preferred Stock [Member]
Stockholders' equity:
Series A common stock equivalent convertible preferred stock, $0.0001 par value; 7,000 shares authorized, 2,500 shares issued and outstanding at June 30, 2024 and December 31, 2023	$ 0	$ 0