Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
CURRENT ASSETS:
Cash and cash equivalents	$ 10,266	$ 16,932
Marketable securities	12,012	19,591
Accounts receivable, net	11	131
Inventories, net	176	583
Prepaid and other current assets	2,706	2,517
Total current assets	25,171	39,754
Right-of-use assets	652	11,226
Property and equipment, net	605	281
Restricted cash	0	2,150
Other noncurrent assets	692	906
Total assets	27,120	54,317
Liabilities, Current [Abstract]
Accounts payable	3,598	3,442
Accrued Expenses and Other Current Liabilities	7,709	6,585
Total current liabilities	11,307	10,027
Operating lease liabilities, noncurrent	479	14,858
Convertible notes	146	0
Other noncurrent liabilities	64	409
Total liabilities	11,996	25,294
COMMITMENTS AND CONTINGENCIES (Note 20)
STOCKHOLDERS’ EQUITY:
Preferred stock—$0.0001 par value: 1,000,000 shares authorized; no shares issued and outstanding	0	0
Common stock—$0.0001 par value: 600,000,000 shares authorized; 13,734,160 and 6,310,090 shares issued and outstanding at December 31, 2024 and 2023	1	1
Additional paid-in capital	388,213	366,647
Accumulated other comprehensive income	5	10
Accumulated deficit	(373,095)	(337,635)
Total stockholders’ equity	15,124	29,023
Total liabilities and stockholders’ equity	$ 27,120	$ 54,317