BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Current assets:
Cash and cash equivalents	$ 44,086	$ 15,354
Other current assets	241	134
Total current assets	44,327	15,488
Property and equipment, net	34	36
Other assets	754	608
Total assets	45,115	16,132
Current liabilities:
Accounts payable	714	795
Accrued compensation and employee benefits	202	329
Accrued expenses and other liabilities	440	264
Total current liabilities	1,356	1,388
Deferred rent, net of current portion	1	3
Total liabilities	$ 1,357	$ 1,391
Commitments and contingencies
Stockholders’ equity:
Common stock, $0.001 par value; 100 million shares authorized at June 30, 2015 and December 31, 2014; 63,219,990 and 21,150,486 shares issued and outstanding at June 30, 2015 and December 31, 2014, respectively	$ 63	$ 21
Additional paid-in capital	133,780	99,342
Accumulated deficit	(90,085)	(84,622)
Total stockholders’ equity	43,758	14,741
Total liabilities and stockholders’ equity	$ 45,115	$ 16,132

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.