Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current assets:
Cash	$ 8,709	$ 14,879
Restricted cash	50	50
Prepaid expenses and other current assets	533	221
Total current assets	9,292	15,150
Right of use asset	538	0
Property and equipment, net	231	172
Other assets	18	0
Total assets	10,079	15,322
Current liabilities:
Accounts payable	856	550
Accrued expenses and other current liabilities	1,076	1,194
Lease Liability	104	0
Total current liabilities	2,036	1,744
Lease Liability, net of current portion	438	0
Total Liabilities	2,474	1,744
Commitments and contingencies
Stockholders' equity:
Preferred stock, $0.0001 par value, 10,000,000 shares authorized	0	0
Common stock, $0.0001 par value, 100,000,000 shares authorized; 25,654,670 and 18,841,814 shares issued and outstanding at September 30, 2019 and December 31, 2018, respectively	3	2
Additional paid-in capital	99,761	99,487
Accumulated deficit	(92,159)	(85,911)
Total stockholders' equity	7,605	13,578
Total liabilities and stockholders' equity	$ 10,079	$ 15,322

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).