Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Current assets:
Cash and cash equivalents	$ 19,888	$ 48,438
Short-term investments	9,935	2,837
Prepaid expenses and other current assets	2,395	3,566
Total current assets	32,218	54,841
Restricted cash	631	631
Property and equipment, net	1,958	2,444
Operating lease right-of-use asset	676	808
Other long-term assets	62	55
Total assets	35,545	58,779
Current liabilities:
Accounts payable	171	319
Accrued liabilities	2,371	12,402
Current operating lease liability	439	414
Total current liabilities	2,981	13,135
Operating lease liability, less current portion	578	803
Total liabilities	3,559	13,938
Stockholders' equity:
Common stock, $0.0001 par value; 900,000,000 shares authorized at June 30, 2025 and December 31, 2024, respectively; 39,439,326 and 39,040,945 shares issued and outstanding at June 30, 2025 and December 31, 2024, respectively	4	4
Additional paid-in capital	454,240	450,982
Accumulated other comprehensive (loss) income	(3)	1
Accumulated deficit	(422,255)	(406,146)
Total stockholders' equity	31,986	44,841
Total liabilities and stockholders' equity	$ 35,545	$ 58,779

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Name:	us-gaap_AccountsPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).