Condensed Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 22,491	$ 24,033
Prepaid expenses	483	713
Total current assets	22,974	24,746
Other assets	30	8
Total assets	23,004	24,754
Current liabilities:
Accounts payable	3,464	2,008
Accrued liabilities	1,808	2,113
Total current liabilities	5,272	4,121
Other liabilities	2	1
Total liabilities	5,274	4,122
Stockholders’ equity (deficit):
Common stock, $0.001 par value; 100,000,000 shares authorized as of June 30, 2017 and December 31, 2016, 10,607,361 and 9,270,255 shares issued and outstanding at June 30, 2017 and December 31, 2016, respectively.	18	17
Additional paid in capital	62,769	47,674
Accumulated deficit	(45,057)	(27,059)
Total stockholders’ equity (deficit)	17,730	20,632
Total liabilities and stockholders’ equity (deficit)	$ 23,004	$ 24,754

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).