Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 85,532	$ 93,335
Restricted cash	24	25
Prepaid and other current assets	1,857	1,966
Total current assets	87,413	95,326
Property and equipment, net	204	155
Other assets	72	72
Total assets	87,689	95,553
Current liabilities:
Accounts payable	4,055	989
Accrued expenses	3,732	4,620
Total current liabilities	7,787	5,609
Commitments and contingencies (Note 5)
Stockholders’ equity:
Common stock	14	14
Additional paid-in capital	164,028	163,526
Accumulated deficit	(84,140)	(73,596)
Total stockholders’ equity	79,902	89,944
Total liabilities and stockholders’ equity	$ 87,689	$ 95,553

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).