BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 46,437	$ 53,359
Other current assets	1,218	1,062
Total current assets	47,655	54,421
Right-of-use asset - operating	391	437
Property and equipment, net	37	48
Other assets	18	18
Total assets	48,101	54,924
Current liabilities:
Accounts payable	1,110	1,117
Accrued compensation and employee benefits	324	925
Accrued expenses and other liabilities	1,375	1,456
Total current liabilities	2,809	3,498
Operating lease liability, net of current portion	329	383
Total liabilities	3,138	3,881
Commitments and contingencies
Stockholders’ equity:
Common stock, $0.001 par value; 100 million shares authorized at June 30, 2022 and December 31, 2021; 14,410,143 shares issued and outstanding at June 30, 2022 and December 31, 2021	14	14
Additional paid-in capital	224,844	224,505
Accumulated deficit	(179,895)	(173,476)
Total stockholders’ equity	44,963	51,043
Total liabilities and stockholders’ equity	$ 48,101	$ 54,924

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

Value received from shareholders in common stock-related transactions that are in excess of par value or stated value and amounts received from other stock-related transactions. Includes only common stock transactions (excludes preferred stock transactions). May be called contributed capital, capital in excess of par, capital surplus, or paid-in capital.