Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 38,548	$ 42,044
Prepaid expenses and other current assets	298	476
Total current assets	38,846	42,520
Other assets	874	786
Total assets	39,720	43,306
Current liabilities:
Accounts payable	698	946
Accrued liabilities	815	812
Total current liabilities	1,513	1,758
Commitments and contingencies (Note 4)
Stockholders’ equity
Common stock, $0.001 par value: 200,000,000 shares authorized as of June 30, 2022 (unaudited) and December 31, 2021; 14,761,261 and 14,754,447 shares issued and outstanding at June 30, 2022 (unaudited) and December 31, 2021, respectively	15	15
Additional paid-in capital	116,959	114,698
Accumulated deficit	(78,767)	(73,165)
Total stockholders’ equity	38,207	41,548
Total liabilities, convertible preferred stock and stockholders’ equity	$ 39,720	$ 43,306

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).

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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).